US20150032216A1 - Knee prosthesis - Google Patents
Knee prosthesis Download PDFInfo
- Publication number
- US20150032216A1 US20150032216A1 US14/514,453 US201414514453A US2015032216A1 US 20150032216 A1 US20150032216 A1 US 20150032216A1 US 201414514453 A US201414514453 A US 201414514453A US 2015032216 A1 US2015032216 A1 US 2015032216A1
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- United States
- Prior art keywords
- bearing
- condyle
- knee joint
- joint prosthesis
- tibial
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/38—Joints for elbows or knees
- A61F2/3868—Joints for elbows or knees with sliding tibial bearing
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/38—Joints for elbows or knees
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/38—Joints for elbows or knees
- A61F2/3886—Joints for elbows or knees for stabilising knees against anterior or lateral dislocations
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
- A61F2002/30383—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by laterally inserting a protrusion, e.g. a rib into a complementarily-shaped groove
- A61F2002/30387—Dovetail connection
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
- A61F2002/30405—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by screwing complementary threads machined on the parts themselves
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
- A61F2002/30462—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements retained or tied with a rope, string, thread, wire or cable
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
- A61F2002/30476—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements locked by an additional locking mechanism
- A61F2002/30481—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements locked by an additional locking mechanism using a locking clip
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30535—Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30604—Special structural features of bone or joint prostheses not otherwise provided for modular
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
- A61F2/30771—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
- A61F2002/30878—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves with non-sharp protrusions, for instance contacting the bone for anchoring, e.g. keels, pegs, pins, posts, shanks, stems, struts
- A61F2002/30884—Fins or wings, e.g. longitudinal wings for preventing rotation within the bone cavity
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
- A61F2/30771—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
- A61F2002/30878—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves with non-sharp protrusions, for instance contacting the bone for anchoring, e.g. keels, pegs, pins, posts, shanks, stems, struts
- A61F2002/30891—Plurality of protrusions
- A61F2002/30892—Plurality of protrusions parallel
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/38—Joints for elbows or knees
- A61F2002/3895—Joints for elbows or knees unicompartimental
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2220/00—Fixations or connections for prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2220/0025—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
- A61F2220/0075—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements sutured, ligatured or stitched, retained or tied with a rope, string, thread, wire or cable
Definitions
- the present disclosure relates to a knee joint prosthesis including a tibial tray component having independent and selectively attachable bearings including fixed and mobile bearings that can be secured to medial and lateral sides of the tibial tray according to the needs of a particular patient.
- a knee joint prosthesis can generally comprise a femoral component and a tibial component.
- the femoral component and the tibial component can be designed to be surgically attached to the distal end of the femur and the proximal end of the tibia, respectively.
- the femoral component can further be designed to cooperate with the tibial component in simulating the articulating motion of an anatomical knee joint.
- the tibial component can further include a bearing component that includes articulation surfaces on the medial and lateral side for cooperating with a medial and lateral condyle portion of the femoral component.
- the bearing component can be fixed relative to the tibial component.
- the bearing component can be a mobile bearing component that has at least a portion that can move relative to the tibial component during articulation of the femoral component.
- the present teachings provide for a knee joint prosthesis assembly including a femoral component and a unitary tibial component.
- the femoral component includes a first condyle and a second condyle.
- the unitary tibial component includes an engaging structure configured to rigidly secure a stationary bearing thereto.
- the stationary bearing is configured to articulate with the first condyle.
- the unitary tibial component further includes a planar tibial bearing surface configured to slidably support a mobile bearing thereon.
- the mobile bearing includes an inferior planar surface configured to slide along the planar tibial bearing surface and a superior surface configured to articulate with the second condyle.
- the present teachings further provide for a knee joint prosthesis assembly including a femoral component and a unitary tibial component.
- the femoral component includes a first condyle and a second condyle connected by a patellar track portion.
- the femoral component defines an opening between the first condyle and the second condyle.
- the unitary tibial component includes an engaging structure configured to rigidly secure a stationary bearing thereto.
- the stationary bearing is configured to articulate with the first condyle.
- the planar tibial bearing surface is configured to slidably support a mobile bearing thereon.
- the mobile bearing includes an inferior planar surface configured to slide along the planar tibial bearing surface and a superior surface configured to articulate with the second condyle.
- a rail extends in an anterior-posterior direction and is configured to restrict the mobile bearing to anterior-posterior movement.
- the present teachings also provide for a knee joint prosthesis assembly including a femoral component and a unitary tibial component.
- the femoral component includes a first condyle and a second condyle connected by a patellar track portion.
- the femoral component defines an opening between the first condyle and the second condyle.
- the unitary tibial component includes a medial portion, a lateral portion, and a slot defined between the medial portion and the lateral portion.
- the engaging structure extends superiorly from one of the medial portion or the lateral portion.
- the engaging structure is configured to rigidly secure a stationary bearing thereto, which is configured to articulate with the first condyle.
- a planar tibial bearing surface is at the other of the medial portion or the lateral portion, and is configured to slidably support a mobile bearing thereon.
- the mobile bearing includes an inferior planar surface configured to slide along the planar tibial bearing surface and a superior surface configured to articulate with the second condyle.
- a rail is between the planar tibial bearing surface and the engaging structure. The rail extends in an anterior-posterior direction and is configured to restrict the mobile bearing to anterior-posterior movement.
- FIG. 1 is an anterior perspective view of a knee prosthesis assembly according to one example of the present teachings
- FIG. 2 is a posterior perspective view of the knee prosthesis of FIG. 1 ;
- FIG. 3 is a lateral perspective view of a femoral component of the knee prosthesis of FIG. 1 ;
- FIG. 4 is a superior perspective view of a tibial tray of the knee prosthesis of FIG. 1 ;
- FIG. 5 is an inferior perspective view of the tibial tray of FIG. 4 ;
- FIG. 6 is a perspective view of a mobile bearing of the knee prosthesis of FIG. 1 ;
- FIG. 7 is a perspective view of a fixed bearing of the knee prosthesis of FIG. 1 ;
- FIG. 8 is a perspective view of a locking bar associated with the fixed bearing of a knee prosthesis of FIG. 1 ;
- FIG. 9 is a partially exploded posterior view of a knee prosthesis constructed in accordance to additional features of the present teachings.
- FIG. 10 is a posterior perspective view of the knee prosthesis of FIG. 9 ;
- FIG. 11 is an anterior perspective view of a tibial tray and fixed bearing portion of the knee prosthesis of FIG. 10 ;
- FIG. 12 is a perspective view of a mobile bearing that slidably cooperates within a pocket formed on the fixed bearing of FIG. 11 ;
- FIG. 13 is an anterior perspective view of a knee prosthesis assembly according to another example of the present teachings that incorporates a mobile bearing component that is selectively attachable to a medial side of a tibial tray and a fixed bearing component that is selectively attachable to a lateral side of the tibial tray;
- FIG. 14 is an anterior superior exploded perspective view of the knee prosthesis assembly of FIG. 13 ;
- FIG. 15 is an anterior inferior exploded perspective view of the knee prosthesis assembly of FIG. 13 ;
- FIG. 16 is a perspective view of a mobile bearing incorporating a metal sleeve according to various features
- FIG. 17 is an anterior perspective view of a tibial tray constructed in accordance to additional features and incorporating a pair of fixed bearings that are selectively locked to the tibial tray with a locking bar;
- FIG. 18 is an anterior superior exploded perspective view of the tibial tray assembly of FIG. 17 ;
- FIG. 19 is an anterior inferior exploded perspective view of the tibial tray assembly of FIG. 17 ;
- FIG. 20 is an anterior perspective view of a tibial tray constructed in accordance to additional features of the present teachings.
- FIG. 21 is a kit having a plurality of tibial trays, medial bearings and lateral bearings according to the present teachings;
- FIG. 22 is an anterior perspective view of a knee prosthesis constructed in accordance to additional features of the present teachings.
- FIG. 23 is a posterior perspective view of the knee prosthesis of FIG. 22 ;
- FIG. 24 is an anterior superior exploded perspective view of a tibial tray assembly of the knee prosthesis of FIG. 22 ;
- FIG. 25 is an anterior inferior exploded perspective view of the tibial tray assembly of FIG. 24 ;
- FIG. 26 is an anterior superior exploded perspective view of a tibial tray assembly constructed in accordance to additional features
- FIG. 27 is an anterior inferior perspective view of the tibial tray assembly of FIG. 26 ;
- FIG. 28 is a kit having a plurality of tibial trays, medial bearings, and lateral bearings according to the present teachings.
- the knee prosthesis assembly 10 can generally include a femoral component 12 , a tibial tray 14 , a medial floating or mobile bearing 16 and a lateral fixed bearing 18 .
- the knee prosthesis assembly 10 can be used when it is desirable to retain or reconstruct an anterior cruciate ligament (ACL) and/or a posterior cruciate ligament (PCL).
- ACL anterior cruciate ligament
- PCL posterior cruciate ligament
- the respective components of the knee prosthesis assembly 10 can be patient specific, such that each component can be constructed for optimal features for a given patient.
- the bone interface margins of the femoral component 12 and tibial tray 14 can be patient specific for optimized bone coverage.
- the overall size, such as anterior-posterior dimensions and bone cut geometry can be determined and used for manufacturing the components of the knee prosthesis assembly 10 .
- some articulation features can be determined and used as criteria for forming the components of the knee prosthesis assembly 10 .
- each of the components of the knee prosthesis assembly 10 can be a patient-specific implant, a semi-custom implant or an off-the-shelf or standard production implant.
- a custom-made implant is a patient-specific, one-of-a-kind implant specifically made for a particular patient, and consequently there is no inventory associated with such implant.
- Standard or off-the shelf implants are available and stocked in a number of sizes, typically six or more, and a number of configurations or types, including bilateral or unilateral implants, constrained, semi-constrained, mobile, etc. Because of the variety of sizes and configurations that are kept in stock to be accommodated by different patients, a large inventory of standard implants is created, and several molds for each type and size of implant may be used.
- Semi-custom implants can provide an intermediate solution between custom-made and off-the-shelf implants. Semi-custom implants reduce the size of inventory and molds required for production, while allowing some degree of patient-specific customization.
- the femoral component 12 can generally comprise a cruciate retaining prosthesis and includes various portions to replace or mimic the distal femur.
- the femoral component 12 can include a medial condyle portion 20 and a lateral condyle portion 22 .
- the condyle portions 20 and 22 can replace the medial and lateral condyles of a distal femur.
- the medial and lateral condyle portions 20 and 22 can interconnect and be formed as a single piece with a patellar track portion 26 .
- the patellar track portion 26 can allow for articulation of a patella, either natural or prosthetic patella, once the femoral component 12 is implanted onto the distal femur.
- the medial and lateral condyle portions 20 and 22 and the patellar track portion 26 can generally define an exterior portion of the femoral component 12 .
- the femoral component 12 can define an opening or passage 30 between the medial and lateral condyle portions 20 and 22 .
- the passage 30 can accommodate, and provide clearance for a host ACL and/or PCL or a reconstructed ACL and/or PCL.
- the medial condyle portion 20 can include a spherical contact surface that is convex in an anterior/posterior direction and a medial/lateral direction.
- the femoral component 12 can include a bone contacting or inferior surface 34 ( FIG. 2 ).
- the inferior surface 34 can include an anterior surface 36 that can be substantially flat and formed generally parallel to a pair of posterior surfaces 38 a and 38 b .
- a pair of intermediate surfaces 40 a and 40 b are provided generally at an intermediate portion of the inferior surface 34 .
- a pair of angled anterior transition surfaces 42 a and 42 b generally connect the anterior surface 36 with the intermediate surfaces 40 a and 40 b .
- a pair of angled posterior transition surfaces 44 a and 44 b are provided between the respective posterior surfaces 38 a and 38 b and the intermediate surfaces 40 a and 40 b .
- a threaded boss 50 a and 50 b can be provided on each of the intermediate surfaces 40 a and 40 b , respectively.
- a threaded boss 52 a and 52 b can be provided on the posterior surfaces 38 a and 38 b , respectively.
- the bosses 50 a , 50 b , 52 a and 52 b can be optionally used to threadably couple with various augments (not specifically shown) as necessary.
- the femoral component 12 can be formed as a unitary structure and cast of a biocompatible high strength alloy, such as cobalt-chromium-molybdenum alloy or similar suitable material. All surfaces, which do not contact the femur, can be highly polished to provide smooth articulating bearing surfaces.
- the interior surface 34 of the femoral component 12 can be roughened or uneven or include porous material to allow bone ingrowth or attachment with bone cement.
- Other features of the femoral component 12 can include those associated with the Oxford® Partial Knee marketed by Biomet, Inc.
- the tibial tray 14 can include a generally U-shaped body having a medial portion 60 and a lateral portion 62 .
- a slot 64 can be formed in the tibial tray 14 generally between the medial and lateral portion 60 and 62 .
- the slot 64 of the tibial tray 14 can accommodate and provide a clearance for a host ACL and/or PCL or a reconstructed ACL and/or PCL.
- the tibial tray 14 can be advanced posteriorly, such that the slot 64 can accommodate a host ACL and/or PCL.
- a tray (and bearing) having a passage can be utilized.
- the tibial tray 14 can include an inferior bone engaging side 66 ( FIG. 5 ) and a superior bearing engaging side 68 ( FIG. 4 ).
- the medial portion 60 of the superior bearing engaging side 68 can include a highly polished tibial bearing surface 70 .
- a rail 72 can extend in a generally anterior/posterior direction adjacent to the highly polished tibial bearing surface 70 .
- the lateral portion 62 can include engaging structure 78 provided on the superior bearing engaging side 68 .
- the engaging structure 78 can include a pair of posts 80 and 82 integrally formed at an anterior edge thereof.
- a retaining rail 84 can extend superiorly from a posterior edge of the lateral portion 62 .
- the posts 80 and 82 can both have an anterior groove 86 and a posterior groove 88 , respectively.
- the retaining rail 84 can have a transverse groove 90 formed on an inwardly facing surface.
- the tibial tray 14 can be generally manufactured of cobalt-chromium-molybdenum alloy or other suitable biocompatible material.
- a pair of fins 94 can extend from the inferior bone engaging side 66 .
- fins 94 are shown operatively associated with the tibial tray 14
- other structures suitable for engaging a proximal tibia can include pegs, posts or porous material can additionally or alternatively be provided on the inferior bone engaging side 66 .
- the medial floating bearing 16 has a substantially planar inferior bearing surface 100 which slidably moves and articulates relative to the highly polished tibial bearing surface 70 .
- the medial floating bearing 16 further includes a first bearing surface 102 .
- the first bearing surface 102 articulates with the medial condyle portion 20 of the femoral component 12 .
- the medial floating bearing 16 can be formed from a surgical grade, low friction, and low wearing plastic, such as ultra-high molecular weight polyethylene (UHMWPE) or other suitable material.
- UHMWPE ultra-high molecular weight polyethylene
- the lateral fixed bearing 18 can include engaging structure 106 formed on an inferior surface for coupling with the engaging structure 78 provided on the lateral portion 62 of the tibial tray 14 .
- the engaging structure 106 can generally include a posteriorly extending lip 110 and an anterior groove 112 .
- a locking bar 114 ( FIG. 8 ) can be slidably inserted through the anterior groove 112 to interlock between the respective grooves 86 to capture the lateral fixed bearing 18 to the lateral portion 62 of the tibial tray 14 .
- the posteriorly extending lip 110 can be nestingly received by the retaining rail 84 .
- the lateral fixed bearing 18 can include a second bearing surface 120 .
- the second bearing surface 120 can articulate with the lateral condyle portion 22 of the femoral component 12 .
- the lateral fixed bearing 18 can be formed from a surgical grade, low friction and low wearing plastic, such as UHMWPE or other suitable material.
- the medial and lateral condyle portions 20 and 22 of the femoral component 12 can articulate on the first and second bearing surfaces 102 and 120 of the respective medial floating bearing 16 and lateral fixed bearing 18 .
- the lateral fixed bearing 18 is static relative to the tibial tray 14 during articulation of the femoral component 12 .
- the medial floating bearing 16 is free to slide along the highly polished tibial bearing surface 70 of the medial portion 60 of the tibial tray 14 .
- the medial floating bearing 16 is bound on an inboard side by the rail 72 .
- the knee prosthesis assembly 210 can generally include a femoral component 212 , a tibial tray 214 , a medial side having a mobile bearing component 216 and a lateral side having a fixed bearing 220 .
- the mobile bearing component has a fixed portion 217 and a mobile bearing portion 218 .
- the femoral component 212 can be constructed similar to the femoral component 12 described below.
- the fixed bearing 220 can be constructed similar to the lateral fixed bearing 18 described above.
- the mobile bearing component 216 can provide articulation that is fully conforming with the femoral component 212 .
- the mobile bearing portion 218 can be captured around its perimeter by a pocket 222 formed by the fixed portion 217 . In this way, the mobile bearing portion 218 can have a reduced likelihood of becoming dislocated relative to the fixed portion 217 . While the mobile bearing component 216 is shown generally associated with the lateral side of the tibial tray 214 , such a configuration can be additionally or alternatively provided on the medial portion of the tibial tray 214 .
- the mobile bearing portion 218 can be formed by polyethylene or polyetheretherketone (PEEK). As shown in FIG. 11 , the fixed portion 217 can have a pair of channels 226 formed thereon for guiding tabs 230 provided on the mobile bearing portion 218 ( FIG. 12 ). It will be appreciated that while the mobile bearing component 216 has been described and shown incorporated on a medial portion of the tibial tray 214 , it can additionally or alternatively be incorporated on a lateral portion of the tibial tray 214 . Likewise, while the fixed bearing 220 has been described and shown incorporated on a lateral portion of the tibial tray 214 , it can additionally or alternatively be incorporated on a medial portion of the tibial tray 214 .
- PEEK polyethylene or polyetheretherketone
- the knee prosthesis assembly 310 can be patient specific, such that each component can be constructed for optimal features for a given patient.
- the knee prosthesis assembly 310 can generally include the femoral component 12 , a tibial tray 314 , a mobile bearing component 316 and a fixed bearing component 318 .
- the mobile bearing component 316 is selectively secured to a medial portion 320 of the tibial tray 314 and a fixed bearing component 318 selectively secured to a lateral portion 322 of the tibial tray 314 for a left knee.
- a mobile bearing component 316 can be provided for both the medial portion 320 and the lateral portion 322 of the tibial tray 314 .
- a fixed bearing component 318 can be provided for both of the medial portion 320 and the lateral portion 322 of the tibial tray 314 .
- the fixed bearing component 318 can alternatively be provided only on the medial portion 320
- a mobile bearing component 316 can be provided only on a lateral portion 322 of the tibial tray 314 .
- any combination of mobile and fixed bearing components can be available and selectively secured to either of the medial or lateral portions 320 and 322 of the tibial tray 314 .
- the femoral component 12 can be generally formed similar to the femoral component 12 described in detail above.
- the medial condyle portion 20 can have a spherical, convex articulation surface that can cooperate with the mobile bearing components 316 as will be described herein. It is appreciated that a similar spherical, convex articulation surface can be provided on the lateral condyle portion 22 in the event that a mobile bearing component is desired on the lateral portion 322 of the tibial tray 314 .
- the mobile bearing component 316 can generally include a fixed portion 330 and a mobile bearing portion 332 ( FIG. 14 ).
- the fixed portion 330 can generally include a pocket 334 defined within a surrounding wall 336 .
- a superior surface 338 can be contoured to cooperate with the profile of the medial condyle portion 20 of the femoral component 12 .
- An inferior surface 340 ( FIG. 15 ) can have a channel 342 that tapers generally anteriorly for locking with a portion of the tibial tray 314 as further discussed herein.
- a rail 346 can be formed into the surrounding wall 336 .
- a groove 348 can be formed around a posterior edge of the fixed portion 330 .
- the fixed portion 330 can have an inner wall 349 that cooperates with the U-shaped profile of the tibial tray 314 to accommodate a host or reconstructed ACL.
- the mobile bearing portion 332 can have an outer perimeter surface 350 that substantially matches a profile of the surrounding wall 336 , however, is reduced in size so as to be stepped inwardly relative to the surrounding wall 336 (see also FIG. 9 ) to allow movement within the surrounding wall 336 .
- Tabs 352 can extend in generally the medial and lateral directions from an inferior surface 354 of the mobile bearing portion 332 .
- a superior articulating surface 358 can substantially conform to the profile of the medial condyle portion 20 of the femoral component 12 .
- the fixed portion 330 and the mobile bearing portion 332 can be formed of UHMWPE or PEEK. According to additional features, a mobile bearing portion 332 ′ ( FIG.
- the metal layer 359 can preclude polymer-polymer contact between the perimeter of the mobile bearing portion 332 ′ and the surrounding wall 336 of the fixed portion 330 to inhibit wear. As shown in FIG. 16 , similar features are identified with common reference numerals having a “prime” suffix.
- the fixed bearing component 318 can generally include a superior surface 360 that substantially conforms to and provides a surface contact with the profile of the lateral condyle portion 22 of the femoral component 12 .
- a channel 362 can be formed along an anterior inferior surface 364 and that generally tapers anteriorly.
- a groove 368 can be formed around a posterior edge of the fixed bearing component 318 .
- the fixed bearing component 318 can have an inner wall 369 that cooperates with the U-shaped profile of the tibial tray 314 to accommodate a host or reconstructed ACL.
- the tibial tray 314 can generally include a locating tab 370 formed on an anterior edge of the medial portion 320 and a locating tab 372 formed on an anterior edge of the lateral portion 322 .
- a slot 374 can be defined through the tibial tray 314 between the medial and lateral portions 320 and 322 .
- the slot 374 can be configured to accommodate and provide clearance for a host ACL and/or PCL or a reconstructed ACL and/or PCL.
- a retaining rail 375 can be formed around a posterior edge of the medial portion 320 .
- the retaining rail 375 can include a lip 376 and a groove 378 .
- a retaining rail 380 can be formed around a posterior edge of the lateral portion 322 of the tibial tray 314 .
- the retaining rail 380 can generally include a lip 382 and a groove 384 .
- An inferior surface 386 of the tibial tray 314 can be generally smooth, but may also incorporate a series of round grooved pegs.
- the inferior surface 386 can be configured to be cemented or press-fit onto the proximal tibia.
- the tibial tray 314 can be generally manufactured of cobalt-chromium-molybdenum alloy or other suitable biocompatible materials.
- Attaching the mobile bearing component 316 to the medial portion 320 of the tibial tray 314 will now be described according to one example.
- the surgeon can select a given mobile bearing component 316 from a plurality of medial bearing components (see also kit 600 , FIG. 21 ) that satisfies the desired characteristics for a given patient, such as height, articulation, etc.
- the mobile bearing portion 332 can be initially advanced into the pocket 334 superiorly, such that the tabs 352 can generally locate against the rail 346 formed on the fixed portion 330 .
- the fixed portion 330 can be located onto the medial portion 320 of the tibial tray 314 along with the mobile bearing portion 332 in an assembly.
- a surgeon can slidably advance the mobile bearing component 316 in a directly generally posteriorly such that the channel 342 is progressively advanced around the locating tab 370 and the groove 348 of the fixed portion 330 is located under the lip 376 of the retaining rail 375 on the tibial tray 314 .
- the fixed portion 330 remains static relative to the medial portion 320 of the tibial tray 314 while the mobile bearing portion 332 is free to slidably advance around the medial portion 320 of the tibial tray 314 within the confines of the surrounding wall 336 of the pocket 334 .
- articulation of the medial condyle portion 20 of the femoral component on the superior articulating surface 358 of the mobile bearing portion 332 can influence the mobile bearing portion 332 to rotate and/or slidably advance such as in an anterior/posterior direction along the medial portion 320 around the pocket 334 .
- connection of the fixed bearing component 318 to the lateral portion 322 of the tibial tray 314 is similarly carried out. Initially, the inferior surface 364 of the fixed bearing component 318 is located onto the lateral portion 322 of the tibial tray 314 . Next, the fixed bearing component 318 is slidably advanced posteriorly, such that the channel 362 slidably accommodates the locating tab 372 while the groove 368 locates under the lip 382 . The fixed bearing component 318 is adapted to be statically secured relative to the lateral portion 322 of the tibial tray when assembled.
- the tibial tray assembly 413 can be patient specific, such that each component can be constructed for optimal features for a given patient.
- the tibial tray assembly 413 can include a tibial tray 414 , a first bearing component 416 , a second bearing component 418 and a locking bar 420 .
- the tibial tray 414 can be generally U-shaped and provides a slot 422 that can be configured to accommodate and provide clearance for a host ACL and/or PCL or a reconstructed ACL and/or PCL.
- Other examples of attaching an artificial or natural ACL and/or PCL may be found in “Knee Prosthesis Assembly with Ligament Link” Serial No. (Attorney Docket No. 5490-000809 and 5490-000809/US/01).
- the first bearing component 416 and the second bearing component 418 are both independently formed and intraoperatively selected according to the needs of a given patient.
- the first bearing component 416 and the second bearing component 418 are generally fixed bearing components, however, a mobile bearing component may be similarly provided for either of the medial and/or lateral sides.
- the locking bar 420 can be used to selectively and intraoperatively secure the respective first and second bearing components 416 and 418 to the tibial tray 414 .
- the first bearing component 416 can have a superior surface 424 , an inferior surface 426 ( FIG. 19 ) having engagement grooves 427 and an anterior channel 428 .
- the second bearing component 418 can include a superior surface 430 , an inferior surface 432 ( FIG. 19 ) having engagement grooves 433 and an anterior channel 434 .
- the tibial tray 414 can include a medial portion 436 , a lateral portion 438 , posterior engagement tabs 440 , an anterior engagement bridge 442 and anterior engagement tabs 443 .
- the anterior engagement bridge 442 can include a track 444 formed thereon.
- the anterior engagement bridge 442 can provide an increased thickness to the tibial tray 414 at the connection between the medial and lateral portion 436 and 438 , respectively to increase durability.
- a wall 446 can be formed on the anterior engagement bridge 442 adjacent to the track 444 .
- the tibial tray 414 can have inferiorly extending posts 450 .
- the locking bar 420 can generally include a body 454 having a finger 456 extending therefrom. A catch 458 can be formed on a terminal end of the finger 456 .
- the locking bar 420 can be formed of biocompatible metallic material, such as titanium for example.
- the body 454 can further include a leading end 460 and a trailing end 462 .
- first and second bearing components 416 and 418 Attaching the respective first and second bearing components 416 and 418 to the tibial tray 414 according to one example of the present teachings will now be described.
- a surgeon has selected a first and second bearing component 416 and 418 that satisfies the given needs of a particular patient (see also kit 600 , FIG. 21 ) they are independently located onto the medial and lateral portions 436 and 438 of the tibial tray 414 .
- the posterior engagement tabs 440 of the tibial tray 414 can locate into the respective engagement grooves 427 and 433 of the first and second bearing components 416 and 418 .
- the respective first and second bearing components 416 and 418 may be advanced posteriorly, such that the engagement tabs 440 can lock into the engagement grooves 427 and 433 .
- the anterior tabs 443 can locate into the anterior engagement grooves 427 and 433 of the first and second bearing components 416 and 418 .
- a surgeon can slidably advance the leading end 460 of the locking bar 420 through the respective anterior channels 428 and 434 of the first and second bearing components 416 and 418 .
- a portion of the body 454 can locate along a posterior side of the anterior engagement bridge 442 while the finger 456 locates around an anterior side of the anterior engagement bridge 442 .
- the locking bar 420 can be further advanced until the catch 458 on the finger 456 can locate around the wall 446 on the anterior engagement bridge 442 .
- the tibial tray 514 generally includes an inferiorly extending stem 516 .
- the tibial tray 514 can be a full tibial tray that can be particularly suited for examples where a central slot (such as the slot 422 ) for accommodating an ACL is not needed.
- the tibial tray 514 includes posterior engagement tabs 540 and an anterior engagement bridge 542 .
- Anterior locating tabs 543 can be formed on the tray 514 .
- the anterior engagement bridge 542 can include a track 544 .
- the tibial tray 514 can be configured to selectively and intraoperatively secure independent medial and lateral bearings, such as the bearings 416 and 418 disclosed herein.
- a kit 600 having a collection of medial and lateral bearings that provide unique articulations, sizes and thicknesses (i.e., D1, D2, D3, etc.) and incorporate either a fixed or mobile configuration on the lateral and medial sides.
- the kit 600 further includes the bicruciate retaining tibial tray and the posterior cruciate retaining tray.
- the kit can be particularly suited for allowing a surgeon the opportunity to intraoperatively select a given medial and/or lateral bearing component and tibial tray that is particularly suited for a given patient. It is contemplated that with the kit 600 , a surgeon can also utilize the components during a revision surgery where the level of constraint needs to be increased. In this regard, a surgeon may only desire to change some components while leaving others unchanged.
- the terms superior, superiorly, superior direction are used to generally refer to the anatomical meaning, such as higher in place or position or generally situated above.
- the terms inferior, inferiorly, inferior direction are used to generally refer to the anatomical meaning, such as lower in place or position or generally situated below.
- the knee prosthesis assembly 610 can generally include a femoral component 612 , a tibial tray 614 , a medial or first fixed bearing 616 and a lateral or second fixed bearing 618 . Similar to the other knee prosthesis assemblies disclosed herein, the knee prosthesis assembly 610 can be used when it is desirable to retain or reconstruct an ACL or PCL.
- the respective components of the knee prosthesis assembly 610 can be patient specific, such that each component can be constructed for optimal features for a given patient.
- the bone interface margins of the femoral component 612 and tibial tray 614 can be patient specific for optimized bone coverage.
- the overall size, such as anterior-posterior dimensions and bone cut geometry can be determined and used for manufacturing the components of the knee prosthesis assembly 610 .
- some articulation features can be determined and used as criteria for forming the components of the knee prosthesis assembly 610 .
- each of the components of the knee prosthesis assembly 610 can be a patient-specific implant, a semi-custom implant or an off-the-shelf or standard production implant.
- a custom-made implant is a patient-specific, one-of-a-kind implant specifically made for a particular patient, and consequently there is no excess inventory associated with multiple sizes of implants. Other configurations are contemplated.
- the femoral component 612 can generally comprise a cruciate retaining prosthesis and includes various portions to replace or mimic the distal femur.
- the femoral component 612 can include a medial condyle portion 619 a and a lateral condyle portion 619 b .
- the condyle portions 619 a and 619 b can replace the medial and lateral condyles of a distal femur.
- the medial and lateral condyle portions 619 a and 619 b can interconnect and be formed as a single piece with a patellar track portion 621 .
- the patellar track portion 621 can allow for articulation of a patella, either natural or prosthetic patella, once the femoral component 612 is implanted into the distal femur.
- the medial and lateral condyle portions 619 a and 619 b and the patellar track portion 621 can generally define an exterior portion of the femoral component 612 .
- the femoral component 612 can define an opening or passage 623 between the medial and lateral condyle portions 619 a and 619 b .
- the passage 623 can accommodate, and provide clearance for a host ACL and/or PCL or a reconstructed ACL and/or PCL.
- the femoral component 612 can include a bone contacting or inferior surface 625 ( FIG. 23 ).
- the inferior surface 625 can include an anterior surface 636 that can be substantially flat and formed generally parallel to a pair of posterior surfaces 638 a and 638 b .
- a pair of intermediate surfaces 640 a and 640 b are provided generally at an intermediate portion of the inferior surface 625 .
- a pair of angled anterior transition surfaces 642 a and 642 b generally connect the anterior surface 636 with the intermediate surfaces 640 a and 640 b .
- a pair of angled posterior transition surfaces 644 a and 644 b are provided between the respective posterior surfaces 638 a and 638 b and the intermediate surfaces 640 a and 640 b .
- a threaded boss 650 a and 650 b can be provided on each of the intermediate surfaces 640 a and 640 b , respectively.
- the bosses 650 a and 650 b can be optionally used to threadably couple with various augments (not specifically shown) as necessary.
- the femoral component 612 can be formed as a unitary structure and cast of a biocompatible high strength alloy, such as cobalt-chromium-molybdenum alloy or similar suitable material. All surfaces, which do not contact the femur, can be highly polished to provide smooth articulating bearing surfaces.
- the interior surface 625 of the femoral component 612 can be roughened or uneven or include porous material to allow bone ingrowth or attachment with bone cement.
- the tibial tray assembly 613 can be patient specific, such that each component can be constructed for optimal features for a given patient.
- the tibial tray assembly 613 can include the tibial tray 614 , the first bearing component 616 , the second bearing component 618 , and a locking bar 620 .
- the tibial tray 614 can be generally U-shaped and provides a slot 622 that can be configured to accommodate and provide clearance for a host ACL and/or PCL or a reconstructed ACL and/or PCL.
- the first bearing component 616 and the second bearing component 618 are both independently formed and intraoperatively selected according to the needs of a given patient.
- the first bearing component 616 and the second bearing component 618 are generally fixed bearing components.
- the locking bar 620 can be used to selectively and intraoperatively secure the respective first and second bearing components 616 and 618 to the tibial tray 614 .
- the first bearing component 616 can have a superior surface 624 , an inferior surface 626 ( FIG. 25 ) having a posterior groove 627 , an anterior channel 628 and an outer groove 629 .
- the second bearing component 618 can include a superior surface 630 , an inferior surface 632 ( FIG. 25 ) having a posterior groove 633 , an anterior channel 634 and an outer groove 635 .
- the tibial tray 614 can include a medial portion 637 a , a lateral portion 637 b , posterior engagement lips 640 , an anterior engagement bridge 642 , and outer securing lips 643 .
- the anterior engagement bridge 642 can include a track 644 formed thereon.
- the anterior engagement bridge 642 can provide an increased thickness to the tibial tray 614 at the connection between the medial and lateral portions 637 a and 637 b , respectively to increase durability.
- the tibial tray 614 can have inferiorly extending keels 648 and inferiorly extending posts 650 .
- the locking bar 620 can generally include a body 654 having a finger 656 extending therefrom. A catch 658 can be formed on a terminal end of the finger 656 .
- the locking bar 620 can be formed of biocompatible metallic material, such as titanium for example.
- the body 654 can further include a leading end 660 and a trailing end 662 .
- first and second bearing components 616 and 618 Attaching the respective first and second bearing components 616 and 618 to the tibial tray 614 according to one example of the present teachings will be described.
- a surgeon has selected a first and second bearing components 616 and 618 (such as from a kit 700 , FIG. 28 ) that satisfies the given needs of a particular patient, they are independently located onto the medial and lateral portions 637 a and 637 b of the tibial tray 614 .
- the posterior engagement lips 640 of the tibial tray 614 can locate into the respective posterior engagement grooves 627 and 633 of the first and second bearing components 616 and 618 .
- first and second bearing components 616 and 618 can be initially located against the superior surface of the tibial tray 614 and slidably advanced posteriorly until the posterior engagement lips 640 can lock into the engagement grooves 627 and 633 .
- the outer securing lips 643 can locate into the corresponding outer grooves 629 and 635 of the respective first and second bearing components 616 and 618 .
- a surgeon can slidably advance the leading end 660 of the locking bar 620 through the respective anterior channels 628 and 634 of the first and second bearing components 616 and 618 .
- a portion of the body 654 can locate along a posterior side of the anterior engagement bridge 642 while the finger 656 locates around an anterior side of the anterior engagement bridge 642 .
- the locking bar 620 can be further advanced until the catch 658 on the finger 656 can locate around the wall 646 on the anterior engagement bridge 642 .
- the tibial tray assembly 713 can be patient specific, such that each component can be constructed for optimal features for a given patient.
- the tibial tray assembly 713 can include a tibial tray 714 , a first bearing component 716 , a second bearing component 718 , and the locking bar 620 .
- the tibial tray 714 may be configured for use with other femoral components not specific to cruciate retaining.
- the tibial tray 714 can have an inferiorly extending stem 722 .
- the first bearing component 716 and the second bearing component 718 are both independently formed and intraoperatively selected according to the needs of a given patient.
- the first bearing component 716 and the second bearing component 718 are generally fixed bearing components.
- the locking bar 620 can be used to selectively and intraoperatively secure the first and second bearing components 716 and 718 to the tibial tray 714 .
- the first bearing component 716 can have a superior surface 724 , an inferior surface 726 ( FIG. 27 ) having a posterior groove 727 , an anterior channel 728 , and an outer groove 729 .
- the second bearing component 718 can have a superior surface 730 , an inferior surface 732 ( FIG. 27 ) having a posterior groove 733 , an anterior channel 734 , and an outer groove 735 .
- the tibial tray 714 can include a medial portion 736 , a lateral portion 738 , posterior engagement lips 740 , an anterior engagement bridge 742 , and outer securing lips 743 .
- the anterior engagement bridge 742 can include a track 744 formed thereon. The anterior engagement bridge 742 can provide an increased thickness to the tibial tray 714 at the connection between the medial and lateral portions 736 and 738 , respectively to increase durability.
- first and second bearing components 716 and 718 Attaching the respective first and second bearing components 716 and 718 to the tibial tray 714 according to one example of the present teachings will be described.
- a surgeon has selected a first and second bearing components 716 and 718 (such as from the kit 700 , FIG. 28 ) that satisfies the given needs of a particular patient, they are independently located onto the medial and lateral portions 736 and 738 of the tibial tray 714 .
- the posterior engagement lips 740 of the tibial tray can locate into the respective posterior engagement grooves 727 and 733 of the first and second bearing components 716 and 718 .
- first and second bearing components 716 and 718 can be initially located against the superior surface of the tibial tray 714 and slidably advanced posteriorly until the posterior engagement lips 740 can lock into the respective grooves 727 and 733 .
- the outer securing lips 743 can locate into the corresponding outer grooves 729 and 735 of the respective first and second bearing components 716 and 718 .
- a surgeon can slidably advance the leading end 660 of the locking bar 620 through the respective anterior channels 728 and 734 of the first and second bearing components 716 and 718 .
- a portion of the body 654 can locate along a posterior side of the anterior engagement bridge 742 while the fingers 656 locates around the anterior side of the anterior engagement bridge 742 .
- the locking bar 620 can be further advanced until the catch 658 on the fingers 656 can locate around the wall 746 on the anterior engagement bridge 742 .
- a kit is shown that includes the tibial trays 614 and 714 as well as the locking bar 620 , and a collection of bearing components including the first bearing components 616 and 716 as well as the second bearing components 618 and 718 .
- a third set of bearing components including a first bearing component 816 and 818 may also be provided.
- the respective bearings can provide various thicknesses and/or articulations that may be available in order to satisfy the needs of a particular patient.
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Abstract
A knee joint prosthesis assembly including a femoral component and a unitary tibial component. The femoral component includes a first condyle and a second condyle. The unitary tibial component includes an engaging structure configured to rigidly secure a stationary bearing thereto. The stationary bearing is configured to articulate with the first condyle. The unitary tibial component further includes a planar tibial bearing surface configured to slidably support a mobile bearing thereon. The mobile bearing includes an inferior planar surface configured to slide along the planar tibial bearing surface and a superior surface configured to articulate with the second condyle.
Description
- This application is a continuation of U.S. patent application Ser. No. 13/609,389 filed Sep. 11, 2012, which is a continuation-in-part of U.S. patent application Ser. No. 12/788,961 filed on May 27, 2010, which claims the benefit and priority of U.S. Patent Application No. 61/181,938 filed May 28, 2009. The entire disclosure of the above applications is incorporated herein by reference.
- The present disclosure relates to a knee joint prosthesis including a tibial tray component having independent and selectively attachable bearings including fixed and mobile bearings that can be secured to medial and lateral sides of the tibial tray according to the needs of a particular patient.
- This section provides background information related to the present disclosure which is not necessarily prior art.
- A knee joint prosthesis can generally comprise a femoral component and a tibial component. The femoral component and the tibial component can be designed to be surgically attached to the distal end of the femur and the proximal end of the tibia, respectively. The femoral component can further be designed to cooperate with the tibial component in simulating the articulating motion of an anatomical knee joint. In many examples, the tibial component can further include a bearing component that includes articulation surfaces on the medial and lateral side for cooperating with a medial and lateral condyle portion of the femoral component. In some examples, the bearing component can be fixed relative to the tibial component. In other examples, the bearing component can be a mobile bearing component that has at least a portion that can move relative to the tibial component during articulation of the femoral component.
- This section provides a general summary of the disclosure, and is not a comprehensive disclosure of its full scope or all of its features.
- The present teachings provide for a knee joint prosthesis assembly including a femoral component and a unitary tibial component. The femoral component includes a first condyle and a second condyle. The unitary tibial component includes an engaging structure configured to rigidly secure a stationary bearing thereto. The stationary bearing is configured to articulate with the first condyle. The unitary tibial component further includes a planar tibial bearing surface configured to slidably support a mobile bearing thereon. The mobile bearing includes an inferior planar surface configured to slide along the planar tibial bearing surface and a superior surface configured to articulate with the second condyle.
- The present teachings further provide for a knee joint prosthesis assembly including a femoral component and a unitary tibial component. The femoral component includes a first condyle and a second condyle connected by a patellar track portion. The femoral component defines an opening between the first condyle and the second condyle. The unitary tibial component includes an engaging structure configured to rigidly secure a stationary bearing thereto. The stationary bearing is configured to articulate with the first condyle. The planar tibial bearing surface is configured to slidably support a mobile bearing thereon. The mobile bearing includes an inferior planar surface configured to slide along the planar tibial bearing surface and a superior surface configured to articulate with the second condyle. A rail extends in an anterior-posterior direction and is configured to restrict the mobile bearing to anterior-posterior movement.
- The present teachings also provide for a knee joint prosthesis assembly including a femoral component and a unitary tibial component. The femoral component includes a first condyle and a second condyle connected by a patellar track portion. The femoral component defines an opening between the first condyle and the second condyle. The unitary tibial component includes a medial portion, a lateral portion, and a slot defined between the medial portion and the lateral portion. The engaging structure extends superiorly from one of the medial portion or the lateral portion. The engaging structure is configured to rigidly secure a stationary bearing thereto, which is configured to articulate with the first condyle. A planar tibial bearing surface is at the other of the medial portion or the lateral portion, and is configured to slidably support a mobile bearing thereon. The mobile bearing includes an inferior planar surface configured to slide along the planar tibial bearing surface and a superior surface configured to articulate with the second condyle. A rail is between the planar tibial bearing surface and the engaging structure. The rail extends in an anterior-posterior direction and is configured to restrict the mobile bearing to anterior-posterior movement.
- Further areas of applicability will become apparent from the description provided herein. The description and specific examples in this summary are intended for purposes of illustration only and are not intended to limit the scope of the present disclosure.
- The drawings described herein are for illustrative purposes only of selected embodiments and not all possible implementations, and are not intended to limit the scope of the present disclosure.
-
FIG. 1 is an anterior perspective view of a knee prosthesis assembly according to one example of the present teachings; -
FIG. 2 is a posterior perspective view of the knee prosthesis ofFIG. 1 ; -
FIG. 3 is a lateral perspective view of a femoral component of the knee prosthesis ofFIG. 1 ; -
FIG. 4 is a superior perspective view of a tibial tray of the knee prosthesis ofFIG. 1 ; -
FIG. 5 is an inferior perspective view of the tibial tray ofFIG. 4 ; -
FIG. 6 is a perspective view of a mobile bearing of the knee prosthesis ofFIG. 1 ; -
FIG. 7 is a perspective view of a fixed bearing of the knee prosthesis ofFIG. 1 ; -
FIG. 8 is a perspective view of a locking bar associated with the fixed bearing of a knee prosthesis ofFIG. 1 ; -
FIG. 9 is a partially exploded posterior view of a knee prosthesis constructed in accordance to additional features of the present teachings; -
FIG. 10 is a posterior perspective view of the knee prosthesis ofFIG. 9 ; -
FIG. 11 is an anterior perspective view of a tibial tray and fixed bearing portion of the knee prosthesis ofFIG. 10 ; -
FIG. 12 is a perspective view of a mobile bearing that slidably cooperates within a pocket formed on the fixed bearing ofFIG. 11 ; -
FIG. 13 is an anterior perspective view of a knee prosthesis assembly according to another example of the present teachings that incorporates a mobile bearing component that is selectively attachable to a medial side of a tibial tray and a fixed bearing component that is selectively attachable to a lateral side of the tibial tray; -
FIG. 14 is an anterior superior exploded perspective view of the knee prosthesis assembly ofFIG. 13 ; -
FIG. 15 is an anterior inferior exploded perspective view of the knee prosthesis assembly ofFIG. 13 ; -
FIG. 16 is a perspective view of a mobile bearing incorporating a metal sleeve according to various features; -
FIG. 17 is an anterior perspective view of a tibial tray constructed in accordance to additional features and incorporating a pair of fixed bearings that are selectively locked to the tibial tray with a locking bar; -
FIG. 18 is an anterior superior exploded perspective view of the tibial tray assembly ofFIG. 17 ; -
FIG. 19 is an anterior inferior exploded perspective view of the tibial tray assembly ofFIG. 17 ; -
FIG. 20 is an anterior perspective view of a tibial tray constructed in accordance to additional features of the present teachings; -
FIG. 21 is a kit having a plurality of tibial trays, medial bearings and lateral bearings according to the present teachings; -
FIG. 22 is an anterior perspective view of a knee prosthesis constructed in accordance to additional features of the present teachings; -
FIG. 23 is a posterior perspective view of the knee prosthesis ofFIG. 22 ; -
FIG. 24 is an anterior superior exploded perspective view of a tibial tray assembly of the knee prosthesis ofFIG. 22 ; -
FIG. 25 is an anterior inferior exploded perspective view of the tibial tray assembly ofFIG. 24 ; -
FIG. 26 is an anterior superior exploded perspective view of a tibial tray assembly constructed in accordance to additional features; -
FIG. 27 is an anterior inferior perspective view of the tibial tray assembly ofFIG. 26 ; and -
FIG. 28 is a kit having a plurality of tibial trays, medial bearings, and lateral bearings according to the present teachings. - Corresponding reference numerals indicate corresponding parts throughout the several views of the drawings.
- Example embodiments will now be described more fully with reference to the accompanying drawings.
- With initial reference to
FIGS. 1 and 2 , a knee prosthesis assembly constructed in accordance to one example of the present teachings is shown and generally identified atreference numeral 10. Theknee prosthesis assembly 10 can generally include afemoral component 12, atibial tray 14, a medial floating ormobile bearing 16 and a lateral fixedbearing 18. As will be described, theknee prosthesis assembly 10 can be used when it is desirable to retain or reconstruct an anterior cruciate ligament (ACL) and/or a posterior cruciate ligament (PCL). - The respective components of the
knee prosthesis assembly 10 can be patient specific, such that each component can be constructed for optimal features for a given patient. For example, the bone interface margins of thefemoral component 12 andtibial tray 14 can be patient specific for optimized bone coverage. In addition, the overall size, such as anterior-posterior dimensions and bone cut geometry can be determined and used for manufacturing the components of theknee prosthesis assembly 10. Moreover, some articulation features can be determined and used as criteria for forming the components of theknee prosthesis assembly 10. In sum, each of the components of theknee prosthesis assembly 10 can be a patient-specific implant, a semi-custom implant or an off-the-shelf or standard production implant. A custom-made implant is a patient-specific, one-of-a-kind implant specifically made for a particular patient, and consequently there is no inventory associated with such implant. Standard or off-the shelf implants are available and stocked in a number of sizes, typically six or more, and a number of configurations or types, including bilateral or unilateral implants, constrained, semi-constrained, mobile, etc. Because of the variety of sizes and configurations that are kept in stock to be accommodated by different patients, a large inventory of standard implants is created, and several molds for each type and size of implant may be used. Semi-custom implants can provide an intermediate solution between custom-made and off-the-shelf implants. Semi-custom implants reduce the size of inventory and molds required for production, while allowing some degree of patient-specific customization. Additional description of patient-specific implants and semi-custom implants and their implementations may be found in copending patent application Ser. No. 12/103,824, filed Apr. 16, 2008 and entitled: Method and Apparatus for Manufacturing an Implant, the disclosure of which is hereby incorporated by reference. - With additional reference to
FIG. 3 , thefemoral component 12 will now be described in greater detail. Thefemoral component 12 can generally comprise a cruciate retaining prosthesis and includes various portions to replace or mimic the distal femur. Thefemoral component 12 can include amedial condyle portion 20 and alateral condyle portion 22. Thecondyle portions lateral condyle portions patellar track portion 26. Thepatellar track portion 26 can allow for articulation of a patella, either natural or prosthetic patella, once thefemoral component 12 is implanted onto the distal femur. The medial andlateral condyle portions patellar track portion 26 can generally define an exterior portion of thefemoral component 12. Thefemoral component 12 can define an opening orpassage 30 between the medial andlateral condyle portions passage 30 can accommodate, and provide clearance for a host ACL and/or PCL or a reconstructed ACL and/or PCL. Themedial condyle portion 20 can include a spherical contact surface that is convex in an anterior/posterior direction and a medial/lateral direction. - The
femoral component 12 can include a bone contacting or inferior surface 34 (FIG. 2 ). Theinferior surface 34 can include ananterior surface 36 that can be substantially flat and formed generally parallel to a pair of posterior surfaces 38 a and 38 b. A pair ofintermediate surfaces inferior surface 34. A pair of angled anterior transition surfaces 42 a and 42 b generally connect theanterior surface 36 with theintermediate surfaces intermediate surfaces boss intermediate surfaces boss 52 a and 52 b can be provided on the posterior surfaces 38 a and 38 b, respectively. Thebosses femoral component 12 can be formed as a unitary structure and cast of a biocompatible high strength alloy, such as cobalt-chromium-molybdenum alloy or similar suitable material. All surfaces, which do not contact the femur, can be highly polished to provide smooth articulating bearing surfaces. Theinterior surface 34 of thefemoral component 12 can be roughened or uneven or include porous material to allow bone ingrowth or attachment with bone cement. Other features of thefemoral component 12 can include those associated with the Oxford® Partial Knee marketed by Biomet, Inc. - With reference now to
FIGS. 1 , 2, 4 and 5, thetibial tray 14 will now be described in greater detail. Thetibial tray 14 can include a generally U-shaped body having amedial portion 60 and alateral portion 62. Aslot 64 can be formed in thetibial tray 14 generally between the medial andlateral portion passage 30 of the femoral component, theslot 64 of thetibial tray 14 can accommodate and provide a clearance for a host ACL and/or PCL or a reconstructed ACL and/or PCL. During implantation, thetibial tray 14 can be advanced posteriorly, such that theslot 64 can accommodate a host ACL and/or PCL. In instances where a reconstructed ACL and/or PCL is used, a tray (and bearing) having a passage can be utilized. One suitable configuration is further described in commonly owned in U.S. Pat. No. 7,255,715; issued Aug. 14, 2007 and is hereby incorporated by reference. Thetibial tray 14 can include an inferior bone engaging side 66 (FIG. 5 ) and a superior bearing engaging side 68 (FIG. 4 ). Themedial portion 60 of the superiorbearing engaging side 68 can include a highly polishedtibial bearing surface 70. Arail 72 can extend in a generally anterior/posterior direction adjacent to the highly polishedtibial bearing surface 70. Thelateral portion 62 can include engagingstructure 78 provided on the superiorbearing engaging side 68. The engagingstructure 78 can include a pair ofposts rail 84 can extend superiorly from a posterior edge of thelateral portion 62. Theposts anterior groove 86 and aposterior groove 88, respectively. The retainingrail 84 can have atransverse groove 90 formed on an inwardly facing surface. Thetibial tray 14 can be generally manufactured of cobalt-chromium-molybdenum alloy or other suitable biocompatible material. A pair offins 94 can extend from the inferiorbone engaging side 66. Whilefins 94 are shown operatively associated with thetibial tray 14, other structures suitable for engaging a proximal tibia can include pegs, posts or porous material can additionally or alternatively be provided on the inferiorbone engaging side 66. - With reference to
FIGS. 1 , 2 and 6, the medial floatingbearing 16 will now be described in greater detail. The medial floatingbearing 16 has a substantially planarinferior bearing surface 100 which slidably moves and articulates relative to the highly polishedtibial bearing surface 70. The medial floatingbearing 16 further includes afirst bearing surface 102. Thefirst bearing surface 102 articulates with themedial condyle portion 20 of thefemoral component 12. The medial floatingbearing 16 can be formed from a surgical grade, low friction, and low wearing plastic, such as ultra-high molecular weight polyethylene (UHMWPE) or other suitable material. - With reference to
FIGS. 1 , 2 and 7, the lateral fixedbearing 18 can includeengaging structure 106 formed on an inferior surface for coupling with the engagingstructure 78 provided on thelateral portion 62 of thetibial tray 14. The engagingstructure 106 can generally include a posteriorly extending lip 110 and ananterior groove 112. A locking bar 114 (FIG. 8 ) can be slidably inserted through theanterior groove 112 to interlock between therespective grooves 86 to capture the lateral fixedbearing 18 to thelateral portion 62 of thetibial tray 14. The posteriorly extending lip 110 can be nestingly received by the retainingrail 84. The lateral fixedbearing 18 can include asecond bearing surface 120. Thesecond bearing surface 120 can articulate with thelateral condyle portion 22 of thefemoral component 12. The lateral fixedbearing 18 can be formed from a surgical grade, low friction and low wearing plastic, such as UHMWPE or other suitable material. - During use, the medial and
lateral condyle portions femoral component 12 can articulate on the first and second bearing surfaces 102 and 120 of the respective medial floatingbearing 16 and lateral fixedbearing 18. As can be appreciated, the lateral fixedbearing 18 is static relative to thetibial tray 14 during articulation of thefemoral component 12. The medial floatingbearing 16 is free to slide along the highly polishedtibial bearing surface 70 of themedial portion 60 of thetibial tray 14. The medial floatingbearing 16 is bound on an inboard side by therail 72. - While the embodiment shown in the figures includes a floating bearing provided on a medial side and a fixed bearing provided on a lateral side, the location of these bearings can be swapped. Similarly, both of the medial and lateral sides can be formed with floating bearings or fixed bearings. Turning now to
FIGS. 9-11 , a knee prosthesis assembly constructed in accordance to additional features of the present teachings is shown and generally identified atreference numeral 210. Theknee prosthesis assembly 210 can generally include afemoral component 212, atibial tray 214, a medial side having amobile bearing component 216 and a lateral side having a fixedbearing 220. The mobile bearing component has a fixedportion 217 and amobile bearing portion 218. Thefemoral component 212 can be constructed similar to thefemoral component 12 described below. The fixedbearing 220 can be constructed similar to the lateral fixedbearing 18 described above. Themobile bearing component 216 can provide articulation that is fully conforming with thefemoral component 212. Themobile bearing portion 218 can be captured around its perimeter by apocket 222 formed by the fixedportion 217. In this way, themobile bearing portion 218 can have a reduced likelihood of becoming dislocated relative to the fixedportion 217. While themobile bearing component 216 is shown generally associated with the lateral side of thetibial tray 214, such a configuration can be additionally or alternatively provided on the medial portion of thetibial tray 214. In one example, themobile bearing portion 218 can be formed by polyethylene or polyetheretherketone (PEEK). As shown inFIG. 11 , the fixedportion 217 can have a pair ofchannels 226 formed thereon for guidingtabs 230 provided on the mobile bearing portion 218 (FIG. 12 ). It will be appreciated that while themobile bearing component 216 has been described and shown incorporated on a medial portion of thetibial tray 214, it can additionally or alternatively be incorporated on a lateral portion of thetibial tray 214. Likewise, while the fixedbearing 220 has been described and shown incorporated on a lateral portion of thetibial tray 214, it can additionally or alternatively be incorporated on a medial portion of thetibial tray 214. - With reference now to
FIGS. 13-16 , aknee prosthesis assembly 310 constructed in accordance to additional features of the present teachings will be described. As with the other knee prosthesis assemblies disclosed herein, theknee prosthesis assembly 310 can be patient specific, such that each component can be constructed for optimal features for a given patient. In this regard, theknee prosthesis assembly 310 can generally include thefemoral component 12, atibial tray 314, amobile bearing component 316 and a fixedbearing component 318. As shown, themobile bearing component 316 is selectively secured to amedial portion 320 of thetibial tray 314 and a fixedbearing component 318 selectively secured to alateral portion 322 of thetibial tray 314 for a left knee. However, it will be appreciated by those skilled in the art that amobile bearing component 316 can be provided for both themedial portion 320 and thelateral portion 322 of thetibial tray 314. Similarly, a fixedbearing component 318 can be provided for both of themedial portion 320 and thelateral portion 322 of thetibial tray 314. Likewise, the fixedbearing component 318 can alternatively be provided only on themedial portion 320, while amobile bearing component 316 can be provided only on alateral portion 322 of thetibial tray 314. In sum, any combination of mobile and fixed bearing components can be available and selectively secured to either of the medial orlateral portions tibial tray 314. - The
femoral component 12 can be generally formed similar to thefemoral component 12 described in detail above. Again, themedial condyle portion 20 can have a spherical, convex articulation surface that can cooperate with themobile bearing components 316 as will be described herein. It is appreciated that a similar spherical, convex articulation surface can be provided on thelateral condyle portion 22 in the event that a mobile bearing component is desired on thelateral portion 322 of thetibial tray 314. - The
mobile bearing component 316 can generally include a fixedportion 330 and a mobile bearing portion 332 (FIG. 14 ). The fixedportion 330 can generally include apocket 334 defined within a surroundingwall 336. Asuperior surface 338 can be contoured to cooperate with the profile of themedial condyle portion 20 of thefemoral component 12. An inferior surface 340 (FIG. 15 ) can have achannel 342 that tapers generally anteriorly for locking with a portion of thetibial tray 314 as further discussed herein. Arail 346 can be formed into the surroundingwall 336. Agroove 348 can be formed around a posterior edge of the fixedportion 330. The fixedportion 330 can have an inner wall 349 that cooperates with the U-shaped profile of thetibial tray 314 to accommodate a host or reconstructed ACL. - The
mobile bearing portion 332 can have anouter perimeter surface 350 that substantially matches a profile of the surroundingwall 336, however, is reduced in size so as to be stepped inwardly relative to the surrounding wall 336 (see alsoFIG. 9 ) to allow movement within the surroundingwall 336.Tabs 352 can extend in generally the medial and lateral directions from aninferior surface 354 of themobile bearing portion 332. A superior articulatingsurface 358 can substantially conform to the profile of themedial condyle portion 20 of thefemoral component 12. The fixedportion 330 and themobile bearing portion 332 can be formed of UHMWPE or PEEK. According to additional features, amobile bearing portion 332′ (FIG. 16 ) can have a metal layer orband 359 disposed around a perimeter. Themetal layer 359 can preclude polymer-polymer contact between the perimeter of themobile bearing portion 332′ and the surroundingwall 336 of the fixedportion 330 to inhibit wear. As shown inFIG. 16 , similar features are identified with common reference numerals having a “prime” suffix. - The fixed
bearing component 318 can generally include asuperior surface 360 that substantially conforms to and provides a surface contact with the profile of thelateral condyle portion 22 of thefemoral component 12. Achannel 362 can be formed along an anteriorinferior surface 364 and that generally tapers anteriorly. Agroove 368 can be formed around a posterior edge of the fixedbearing component 318. The fixedbearing component 318 can have an inner wall 369 that cooperates with the U-shaped profile of thetibial tray 314 to accommodate a host or reconstructed ACL. - The
tibial tray 314 can generally include alocating tab 370 formed on an anterior edge of themedial portion 320 and alocating tab 372 formed on an anterior edge of thelateral portion 322. Aslot 374 can be defined through thetibial tray 314 between the medial andlateral portions slot 374 can be configured to accommodate and provide clearance for a host ACL and/or PCL or a reconstructed ACL and/or PCL. A retainingrail 375 can be formed around a posterior edge of themedial portion 320. The retainingrail 375 can include alip 376 and agroove 378. A retainingrail 380 can be formed around a posterior edge of thelateral portion 322 of thetibial tray 314. The retainingrail 380 can generally include alip 382 and agroove 384. Aninferior surface 386 of thetibial tray 314 can be generally smooth, but may also incorporate a series of round grooved pegs. Theinferior surface 386 can be configured to be cemented or press-fit onto the proximal tibia. Thetibial tray 314 can be generally manufactured of cobalt-chromium-molybdenum alloy or other suitable biocompatible materials. - Attaching the
mobile bearing component 316 to themedial portion 320 of thetibial tray 314 will now be described according to one example. At the outset, the surgeon can select a givenmobile bearing component 316 from a plurality of medial bearing components (see also kit 600,FIG. 21 ) that satisfies the desired characteristics for a given patient, such as height, articulation, etc. Themobile bearing portion 332 can be initially advanced into thepocket 334 superiorly, such that thetabs 352 can generally locate against therail 346 formed on the fixedportion 330. Concurrently or subsequently, the fixedportion 330 can be located onto themedial portion 320 of thetibial tray 314 along with themobile bearing portion 332 in an assembly. Next, a surgeon can slidably advance themobile bearing component 316 in a directly generally posteriorly such that thechannel 342 is progressively advanced around the locatingtab 370 and thegroove 348 of the fixedportion 330 is located under thelip 376 of the retainingrail 375 on thetibial tray 314. It will be appreciated that at this point, the fixedportion 330 remains static relative to themedial portion 320 of thetibial tray 314 while themobile bearing portion 332 is free to slidably advance around themedial portion 320 of thetibial tray 314 within the confines of the surroundingwall 336 of thepocket 334. It can be appreciated that articulation of themedial condyle portion 20 of the femoral component on the superior articulatingsurface 358 of themobile bearing portion 332 can influence themobile bearing portion 332 to rotate and/or slidably advance such as in an anterior/posterior direction along themedial portion 320 around thepocket 334. - Connection of the fixed
bearing component 318 to thelateral portion 322 of thetibial tray 314 is similarly carried out. Initially, theinferior surface 364 of the fixedbearing component 318 is located onto thelateral portion 322 of thetibial tray 314. Next, the fixedbearing component 318 is slidably advanced posteriorly, such that thechannel 362 slidably accommodates the locatingtab 372 while thegroove 368 locates under thelip 382. The fixedbearing component 318 is adapted to be statically secured relative to thelateral portion 322 of the tibial tray when assembled. - With reference now to
FIGS. 17-19 , atibial tray assembly 413 constructed in accordance to additional features of the present teachings will be described. As with the other knee prosthesis assemblies disclosed herein, thetibial tray assembly 413 can be patient specific, such that each component can be constructed for optimal features for a given patient. In this regard, thetibial tray assembly 413 can include atibial tray 414, afirst bearing component 416, asecond bearing component 418 and a lockingbar 420. As with thetibial tray 314 described above, thetibial tray 414 can be generally U-shaped and provides aslot 422 that can be configured to accommodate and provide clearance for a host ACL and/or PCL or a reconstructed ACL and/or PCL. Other examples of attaching an artificial or natural ACL and/or PCL may be found in “Knee Prosthesis Assembly with Ligament Link” Serial No. (Attorney Docket No. 5490-000809 and 5490-000809/US/01). As with the other bearing components disclosed herein, thefirst bearing component 416 and thesecond bearing component 418 are both independently formed and intraoperatively selected according to the needs of a given patient. Thefirst bearing component 416 and thesecond bearing component 418 are generally fixed bearing components, however, a mobile bearing component may be similarly provided for either of the medial and/or lateral sides. As will become appreciated from the following discussion, the lockingbar 420 can be used to selectively and intraoperatively secure the respective first andsecond bearing components tibial tray 414. Thefirst bearing component 416 can have asuperior surface 424, an inferior surface 426 (FIG. 19 ) havingengagement grooves 427 and ananterior channel 428. Similarly, thesecond bearing component 418 can include asuperior surface 430, an inferior surface 432 (FIG. 19 ) havingengagement grooves 433 and ananterior channel 434. - The
tibial tray 414 can include amedial portion 436, alateral portion 438,posterior engagement tabs 440, ananterior engagement bridge 442 andanterior engagement tabs 443. Theanterior engagement bridge 442 can include atrack 444 formed thereon. Theanterior engagement bridge 442 can provide an increased thickness to thetibial tray 414 at the connection between the medial andlateral portion wall 446 can be formed on theanterior engagement bridge 442 adjacent to thetrack 444. Thetibial tray 414 can have inferiorly extendingposts 450. - The locking
bar 420 can generally include abody 454 having afinger 456 extending therefrom. Acatch 458 can be formed on a terminal end of thefinger 456. The lockingbar 420 can be formed of biocompatible metallic material, such as titanium for example. Thebody 454 can further include aleading end 460 and a trailingend 462. - Attaching the respective first and
second bearing components tibial tray 414 according to one example of the present teachings will now be described. Once a surgeon has selected a first andsecond bearing component FIG. 21 ), they are independently located onto the medial andlateral portions tibial tray 414. In this regard, theposterior engagement tabs 440 of thetibial tray 414 can locate into therespective engagement grooves second bearing components second bearing components engagement tabs 440 can lock into theengagement grooves anterior tabs 443 can locate into theanterior engagement grooves second bearing components leading end 460 of the lockingbar 420 through the respectiveanterior channels second bearing components body 454 can locate along a posterior side of theanterior engagement bridge 442 while thefinger 456 locates around an anterior side of theanterior engagement bridge 442. The lockingbar 420 can be further advanced until thecatch 458 on thefinger 456 can locate around thewall 446 on theanterior engagement bridge 442. - With reference now to
FIG. 20 , anothertibial tray 514 constructed in accordance to the present teachings is shown. Thetibial tray 514 generally includes an inferiorly extendingstem 516. Thetibial tray 514 can be a full tibial tray that can be particularly suited for examples where a central slot (such as the slot 422) for accommodating an ACL is not needed. Thetibial tray 514 includesposterior engagement tabs 540 and ananterior engagement bridge 542. Anterior locatingtabs 543 can be formed on thetray 514. Theanterior engagement bridge 542 can include atrack 544. Thetibial tray 514 can be configured to selectively and intraoperatively secure independent medial and lateral bearings, such as thebearings - Turning now to
FIG. 21 , akit 600 is shown having a collection of medial and lateral bearings that provide unique articulations, sizes and thicknesses (i.e., D1, D2, D3, etc.) and incorporate either a fixed or mobile configuration on the lateral and medial sides. Thekit 600 further includes the bicruciate retaining tibial tray and the posterior cruciate retaining tray. As disclosed herein, the kit can be particularly suited for allowing a surgeon the opportunity to intraoperatively select a given medial and/or lateral bearing component and tibial tray that is particularly suited for a given patient. It is contemplated that with thekit 600, a surgeon can also utilize the components during a revision surgery where the level of constraint needs to be increased. In this regard, a surgeon may only desire to change some components while leaving others unchanged. - As used herein, the terms superior, superiorly, superior direction are used to generally refer to the anatomical meaning, such as higher in place or position or generally situated above. Similarly, the terms inferior, inferiorly, inferior direction are used to generally refer to the anatomical meaning, such as lower in place or position or generally situated below.
- Turning now to
FIGS. 22 and 23 , a knee prosthesis assembly constructed in accordance to another example of the present teachings is shown and generally identified atreference numeral 610. Theknee prosthesis assembly 610 can generally include afemoral component 612, atibial tray 614, a medial or first fixedbearing 616 and a lateral or second fixedbearing 618. Similar to the other knee prosthesis assemblies disclosed herein, theknee prosthesis assembly 610 can be used when it is desirable to retain or reconstruct an ACL or PCL. - The respective components of the
knee prosthesis assembly 610 can be patient specific, such that each component can be constructed for optimal features for a given patient. For example, the bone interface margins of thefemoral component 612 andtibial tray 614 can be patient specific for optimized bone coverage. In addition, the overall size, such as anterior-posterior dimensions and bone cut geometry can be determined and used for manufacturing the components of theknee prosthesis assembly 610. Moreover, some articulation features can be determined and used as criteria for forming the components of theknee prosthesis assembly 610. In sum, each of the components of theknee prosthesis assembly 610 can be a patient-specific implant, a semi-custom implant or an off-the-shelf or standard production implant. A custom-made implant is a patient-specific, one-of-a-kind implant specifically made for a particular patient, and consequently there is no excess inventory associated with multiple sizes of implants. Other configurations are contemplated. - The
femoral component 612 will now be described in greater detail. Thefemoral component 612 can generally comprise a cruciate retaining prosthesis and includes various portions to replace or mimic the distal femur. Thefemoral component 612 can include amedial condyle portion 619 a and alateral condyle portion 619 b. Thecondyle portions lateral condyle portions patellar track portion 621. Thepatellar track portion 621 can allow for articulation of a patella, either natural or prosthetic patella, once thefemoral component 612 is implanted into the distal femur. The medial andlateral condyle portions patellar track portion 621 can generally define an exterior portion of thefemoral component 612. Thefemoral component 612 can define an opening orpassage 623 between the medial andlateral condyle portions passage 623 can accommodate, and provide clearance for a host ACL and/or PCL or a reconstructed ACL and/or PCL. - The
femoral component 612 can include a bone contacting or inferior surface 625 (FIG. 23 ). Theinferior surface 625 can include ananterior surface 636 that can be substantially flat and formed generally parallel to a pair ofposterior surfaces intermediate surfaces inferior surface 625. A pair of angled anterior transition surfaces 642 a and 642 b generally connect theanterior surface 636 with theintermediate surfaces posterior surfaces intermediate surfaces boss intermediate surfaces bosses femoral component 612 can be formed as a unitary structure and cast of a biocompatible high strength alloy, such as cobalt-chromium-molybdenum alloy or similar suitable material. All surfaces, which do not contact the femur, can be highly polished to provide smooth articulating bearing surfaces. Theinterior surface 625 of thefemoral component 612 can be roughened or uneven or include porous material to allow bone ingrowth or attachment with bone cement. - With reference now to
FIGS. 24 and 25 , atibial tray assembly 613 constructed in accordance to the present disclosure will be described. As with the other knee prosthesis assemblies disclosed herein, thetibial tray assembly 613 can be patient specific, such that each component can be constructed for optimal features for a given patient. In this regard, thetibial tray assembly 613 can include thetibial tray 614, thefirst bearing component 616, thesecond bearing component 618, and a lockingbar 620. Thetibial tray 614 can be generally U-shaped and provides aslot 622 that can be configured to accommodate and provide clearance for a host ACL and/or PCL or a reconstructed ACL and/or PCL. As with the other bearing components disclosed herein, thefirst bearing component 616 and thesecond bearing component 618 are both independently formed and intraoperatively selected according to the needs of a given patient. Thefirst bearing component 616 and thesecond bearing component 618 are generally fixed bearing components. The lockingbar 620 can be used to selectively and intraoperatively secure the respective first andsecond bearing components tibial tray 614. Thefirst bearing component 616 can have a superior surface 624, an inferior surface 626 (FIG. 25 ) having aposterior groove 627, ananterior channel 628 and anouter groove 629. Similarly, thesecond bearing component 618 can include asuperior surface 630, an inferior surface 632 (FIG. 25 ) having aposterior groove 633, ananterior channel 634 and anouter groove 635. - The
tibial tray 614 can include amedial portion 637 a, alateral portion 637 b,posterior engagement lips 640, ananterior engagement bridge 642, and outer securinglips 643. Theanterior engagement bridge 642 can include atrack 644 formed thereon. Theanterior engagement bridge 642 can provide an increased thickness to thetibial tray 614 at the connection between the medial andlateral portions tibial tray 614 can have inferiorly extendingkeels 648 and inferiorly extendingposts 650. - The locking
bar 620 can generally include abody 654 having afinger 656 extending therefrom. Acatch 658 can be formed on a terminal end of thefinger 656. The lockingbar 620 can be formed of biocompatible metallic material, such as titanium for example. Thebody 654 can further include aleading end 660 and a trailingend 662. - Attaching the respective first and
second bearing components tibial tray 614 according to one example of the present teachings will be described. Once a surgeon has selected a first andsecond bearing components 616 and 618 (such as from a kit 700,FIG. 28 ) that satisfies the given needs of a particular patient, they are independently located onto the medial andlateral portions tibial tray 614. In this regard, theposterior engagement lips 640 of thetibial tray 614 can locate into the respectiveposterior engagement grooves second bearing components second bearing components tibial tray 614 and slidably advanced posteriorly until theposterior engagement lips 640 can lock into theengagement grooves lips 643 can locate into the correspondingouter grooves second bearing components leading end 660 of the lockingbar 620 through the respectiveanterior channels second bearing components body 654 can locate along a posterior side of theanterior engagement bridge 642 while thefinger 656 locates around an anterior side of theanterior engagement bridge 642. The lockingbar 620 can be further advanced until thecatch 658 on thefinger 656 can locate around thewall 646 on theanterior engagement bridge 642. - With reference now to
FIGS. 26 and 27 , atibial tray assembly 713 constructed in accordance to the present disclosure will be described. As with the other knee prosthesis assemblies disclosed herein, thetibial tray assembly 713 can be patient specific, such that each component can be constructed for optimal features for a given patient. In this regard, thetibial tray assembly 713 can include atibial tray 714, afirst bearing component 716, asecond bearing component 718, and the lockingbar 620. Thetibial tray 714 may be configured for use with other femoral components not specific to cruciate retaining. Thetibial tray 714 can have an inferiorly extendingstem 722. As with the other bearing components described herein, thefirst bearing component 716 and thesecond bearing component 718 are both independently formed and intraoperatively selected according to the needs of a given patient. Thefirst bearing component 716 and thesecond bearing component 718 are generally fixed bearing components. The lockingbar 620 can be used to selectively and intraoperatively secure the first andsecond bearing components tibial tray 714. Thefirst bearing component 716 can have asuperior surface 724, an inferior surface 726 (FIG. 27 ) having aposterior groove 727, ananterior channel 728, and anouter groove 729. Similarly, thesecond bearing component 718 can have asuperior surface 730, an inferior surface 732 (FIG. 27 ) having aposterior groove 733, ananterior channel 734, and anouter groove 735. - The
tibial tray 714 can include amedial portion 736, alateral portion 738,posterior engagement lips 740, ananterior engagement bridge 742, and outer securinglips 743. Theanterior engagement bridge 742 can include atrack 744 formed thereon. Theanterior engagement bridge 742 can provide an increased thickness to thetibial tray 714 at the connection between the medial andlateral portions - Attaching the respective first and
second bearing components tibial tray 714 according to one example of the present teachings will be described. Once a surgeon has selected a first andsecond bearing components 716 and 718 (such as from the kit 700,FIG. 28 ) that satisfies the given needs of a particular patient, they are independently located onto the medial andlateral portions tibial tray 714. In this regard, theposterior engagement lips 740 of the tibial tray can locate into the respectiveposterior engagement grooves second bearing components second bearing components tibial tray 714 and slidably advanced posteriorly until theposterior engagement lips 740 can lock into therespective grooves lips 743 can locate into the correspondingouter grooves second bearing components leading end 660 of the lockingbar 620 through the respectiveanterior channels second bearing components body 654 can locate along a posterior side of theanterior engagement bridge 742 while thefingers 656 locates around the anterior side of theanterior engagement bridge 742. The lockingbar 620 can be further advanced until thecatch 658 on thefingers 656 can locate around thewall 746 on theanterior engagement bridge 742. - Turning now to
FIG. 28 , a kit is shown that includes thetibial trays bar 620, and a collection of bearing components including thefirst bearing components second bearing components first bearing component - The foregoing description of the embodiments has been provided for purposes of illustration and description. It is not intended to be exhaustive or to limit the disclosure. Individual elements or features of a particular embodiment are generally not limited to that particular embodiment, but, where applicable, are interchangeable and can be used in a selected embodiment, even if not specifically shown or described. The same may also be varied in many ways. Such variations are not to be regarded as a departure from the disclosure, and all such modifications are intended to be included within the scope of the disclosure.
Claims (20)
1. A knee joint prosthesis assembly comprising:
a femoral component including a first condyle and a second condyle; and
a unitary tibial component including:
an engaging structure configured to rigidly secure a stationary bearing thereto, the stationary bearing configured to articulate with the first condyle; and
a planar tibial bearing surface configured to slidably support a mobile bearing thereon, the mobile bearing including an inferior planar surface configured to slide along the planar tibial bearing surface and a superior surface configured to articulate with the second condyle.
2. The knee joint prosthesis assembly of claim 1 , wherein the mobile bearing is configured to slide only in an anterior-posterior direction.
3. The knee joint prosthesis assembly of claim 1 , wherein the mobile bearing is a floating bearing.
4. The knee joint prosthesis assembly of claim 1 , wherein the unitary tibial component includes a rail extending anterior-posterior, the mobile bearing is configured to slide along the rail.
5. The knee joint prosthesis assembly of claim 1 , wherein the engaging structure of the unitary tibial component includes a plurality of coupling members extending superiorly and configured to couple directly with the stationary bearing.
6. The knee joint prosthesis assembly of claim 1 , wherein the stationary bearing is a lateral bearing and the mobile bearing is a medial bearing.
7. The knee joint prosthesis assembly of claim 1 , wherein the stationary bearing is a medial bearing and the mobile bearing is a lateral bearing.
8. The knee joint prosthesis assembly of claim 1 , wherein a rail restricts rotation of the mobile bearing.
9. A knee joint prosthesis assembly comprising:
a femoral component including a first condyle and a second condyle connected by a patellar track portion, the femoral component defining an opening between the first condyle and the second condyle; and
a unitary tibial component including:
an engaging structure configured to rigidly secure a stationary bearing thereto, the stationary bearing configured to articulate with the first condyle;
a planar tibial bearing surface configured to slidably support a mobile bearing thereon, the mobile bearing including an inferior planar surface configured to slide along the planar tibial bearing surface and a superior surface configured to articulate with the second condyle; and
a rail extending in an anterior-posterior direction and configured to restrict the mobile bearing to anterior-posterior movement.
10. The knee joint prosthesis of claim 9 , wherein the rail abuts a side surface of the mobile bearing.
11. The knee joint prosthesis of claim 9 , wherein the rail protrudes superiorly.
12. The knee joint prosthesis of claim 9 , wherein the rail is between the mobile bearing and the stationary bearing.
13. The knee joint prosthesis of claim 9 , wherein the mobile bearing is a medial bearing and the stationary bearing is a lateral bearing.
14. The knee joint prosthesis of claim 9 , wherein the unitary tibial component defines a slot between the rail and the engaging structure.
15. A knee joint prosthesis assembly comprising:
a femoral component including a first condyle and a second condyle connected by a patellar track portion, the femoral component defining an opening between the first condyle and the second condyle; and
a unitary tibial component including:
a medial portion, a lateral portion, and a slot defined between the medial portion and the lateral portion;
an engaging structure extending superiorly from one of the medial portion or the lateral portion, the engaging structure configured to rigidly secure a stationary bearing thereto, the stationary bearing configured to articulate with the first condyle;
a planar tibial bearing surface at the other of the medial portion or the lateral portion, the planar tibial bearing surface configured to slidably support a mobile bearing thereon, the mobile bearing including an inferior planar surface configured to slide along the planar tibial bearing surface and a superior surface configured to articulate with the second condyle; and
a rail between the planar tibial bearing surface and the engaging structure, the rail extending in an anterior-posterior direction and configured to restrict the mobile bearing to anterior-posterior movement.
16. The knee joint prosthesis assembly of claim 15 , wherein the engaging structure extends from the lateral portion and the planar tibial bearing surface is at the medial portion.
17. The knee joint prosthesis assembly of claim 15 , wherein the rail abuts an inner surface of the mobile bearing.
18. The knee joint prosthesis assembly of claim 15 , wherein the mobile bearing is a floating bearing.
19. The knee joint prosthesis assembly of claim 15 , wherein the rail protrudes superiorly away from the planar tibial bearing surface.
20. The knee joint prosthesis assembly of claim 15 , wherein the engaging structure includes tabs at an anterior portion and a posterior portion of the unitary tibial component.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US14/514,453 US20150032216A1 (en) | 2009-05-28 | 2014-10-15 | Knee prosthesis |
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US18193809P | 2009-05-28 | 2009-05-28 | |
US12/788,961 US20100305710A1 (en) | 2009-05-28 | 2010-05-27 | Knee Prosthesis |
US13/609,389 US8894715B2 (en) | 2009-05-28 | 2012-09-11 | Knee prosthesis |
US14/514,453 US20150032216A1 (en) | 2009-05-28 | 2014-10-15 | Knee prosthesis |
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US13/609,389 Continuation US8894715B2 (en) | 2009-05-28 | 2012-09-11 | Knee prosthesis |
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US13/609,389 Active US8894715B2 (en) | 2009-05-28 | 2012-09-11 | Knee prosthesis |
US14/514,453 Abandoned US20150032216A1 (en) | 2009-05-28 | 2014-10-15 | Knee prosthesis |
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US13/609,389 Active US8894715B2 (en) | 2009-05-28 | 2012-09-11 | Knee prosthesis |
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US10231840B2 (en) | 2016-07-27 | 2019-03-19 | Howmedica Osteonics Corp. | Low profile tibial baseplate with fixation members |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4714474A (en) * | 1986-05-12 | 1987-12-22 | Dow Corning Wright Corporation | Tibial knee joint prosthesis with removable articulating surface insert |
US20040138755A1 (en) * | 1999-06-16 | 2004-07-15 | Btg International Limited | Tibial component |
Family Cites Families (47)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4207627A (en) | 1979-01-18 | 1980-06-17 | Cloutier Jean Marie | Knee prosthesis |
DE3433264C2 (en) | 1984-09-11 | 1986-10-02 | S + G Implants GmbH, 2400 Lübeck | Tibial part for a knee joint endoprosthesis |
SE450460B (en) | 1984-11-28 | 1987-06-29 | Albrektsson Bjoern | DEVICE IN ARTIFICIAL MENISH FOR A KNEE JOINT PROTECTION |
US4795468A (en) | 1987-12-23 | 1989-01-03 | Zimmer, Inc. | Mechanism and method for locking a bearing insert to the base of a prosthetic implant |
GB9005496D0 (en) * | 1990-03-12 | 1990-05-09 | Howmedica | Tibial component for a replacement knee prosthesis and total knee prosthesis incorporating such a component |
US5358531A (en) | 1990-06-12 | 1994-10-25 | British Technology Group Limited | Prosthetic knee joint devices |
US5395401A (en) | 1991-06-17 | 1995-03-07 | Bahler; Andre | Prosthetic device for a complex joint |
US5282868A (en) | 1991-06-17 | 1994-02-01 | Andre Bahler | Prosthetic arrangement for a complex joint, especially knee joint |
US5470354A (en) | 1991-11-12 | 1995-11-28 | Biomet Inc. | Force sensing apparatus and method for orthopaedic joint reconstruction |
GB9201231D0 (en) | 1992-01-21 | 1992-03-11 | Howmedica | Tibial element for a replacement knee prosthesis |
US5330534A (en) | 1992-02-10 | 1994-07-19 | Biomet, Inc. | Knee joint prosthesis with interchangeable components |
US5344460A (en) * | 1992-10-30 | 1994-09-06 | Encore Orthopedics, Inc. | Prosthesis system |
US5358530A (en) | 1993-03-29 | 1994-10-25 | Zimmer, Inc. | Mobile bearing knee |
GB9413607D0 (en) | 1994-07-06 | 1994-08-24 | Goodfellow John W | Endoprosthetic knee joint device |
US5702464A (en) * | 1996-02-20 | 1997-12-30 | Smith & Nephew Inc. | Modular trial tibial insert |
US5871543A (en) | 1996-02-23 | 1999-02-16 | Hofmann; Aaron A. | Tibial prosthesis with mobile bearing member |
DE69716339T2 (en) | 1996-05-28 | 2003-02-20 | Howmedica Internat S De R L | Tibial part for a knee prosthesis |
US5964808A (en) | 1996-07-11 | 1999-10-12 | Wright Medical Technology, Inc. | Knee prosthesis |
CA2226240A1 (en) | 1997-01-17 | 1998-07-17 | Ceramtec Ag | Fixation of a tibial part on a tibial plate of a knee-joint endoprosthesis |
CA2233265C (en) | 1997-04-04 | 2004-09-14 | Bryan Cornwall | Deep flexion knee prosthesis |
US6428577B1 (en) | 1998-05-20 | 2002-08-06 | Smith & Nephew, Inc. | Mobile bearing knee prosthesis |
US6500208B1 (en) | 1998-10-16 | 2002-12-31 | Biomet, Inc. | Nonmodular joint prosthesis convertible in vivo to a modular prosthesis |
US20050209703A1 (en) | 1999-04-02 | 2005-09-22 | Fell Barry M | Surgically implantable prosthetic system |
US8066776B2 (en) | 2001-12-14 | 2011-11-29 | Btg International Limited | Tibial component |
US6210445B1 (en) | 1999-10-26 | 2001-04-03 | Bristol-Myers Squibb Company | Tibial knee component with a mobile bearing |
US20030187510A1 (en) | 2001-05-04 | 2003-10-02 | Hyde Edward R. | Mobile bearing prostheses |
US6482209B1 (en) | 2001-06-14 | 2002-11-19 | Gerard A. Engh | Apparatus and method for sculpting the surface of a joint |
US6923832B1 (en) | 2002-03-21 | 2005-08-02 | Trigon Incorporated | Revision tibial component |
US6946001B2 (en) | 2003-02-03 | 2005-09-20 | Zimmer Technology, Inc. | Mobile bearing unicompartmental knee |
US6905513B1 (en) | 2002-08-30 | 2005-06-14 | Biomet, Inc. | Knee prosthesis with graft ligaments |
US20040102852A1 (en) * | 2002-11-22 | 2004-05-27 | Johnson Erin M. | Modular knee prosthesis |
US7033397B2 (en) | 2003-02-03 | 2006-04-25 | Zimmer Technology, Inc. | Mobile bearing unicondylar tibial knee prosthesis |
ATE547998T1 (en) * | 2004-01-12 | 2012-03-15 | Depuy Products Inc | SYSTEMS FOR COMPARTMENT REPLACEMENT IN ONE KNEE |
EP1574185B1 (en) | 2004-03-09 | 2012-05-23 | Zimmer Technology, Inc. | Tibial knee component with a mobile bearing |
AU2005267157B2 (en) | 2004-07-20 | 2011-02-24 | Cayenne Medical, Inc. | Modular apparatus for sculpting the surface of a joint |
US7354354B2 (en) | 2004-12-17 | 2008-04-08 | Integran Technologies Inc. | Article comprising a fine-grained metallic material and a polymeric material |
US7463198B2 (en) | 2005-12-16 | 2008-12-09 | Applied Radar Inc. | Non-woven textile microwave antennas and components |
US20080257363A1 (en) | 2007-04-17 | 2008-10-23 | Biomet Manufacturing Corp. | Method And Apparatus For Manufacturing An Implant |
US8500818B2 (en) | 2006-09-29 | 2013-08-06 | Biomet Manufacturing, Llc | Knee prosthesis assembly with ligament link |
US8147557B2 (en) | 2007-03-30 | 2012-04-03 | Depuy Products, Inc. | Mobile bearing insert having offset dwell point |
US8142510B2 (en) * | 2007-03-30 | 2012-03-27 | Depuy Products, Inc. | Mobile bearing assembly having a non-planar interface |
US8147558B2 (en) | 2007-03-30 | 2012-04-03 | Depuy Products, Inc. | Mobile bearing assembly having multiple articulation interfaces |
US8764841B2 (en) | 2007-03-30 | 2014-07-01 | DePuy Synthes Products, LLC | Mobile bearing assembly having a closed track |
US8328874B2 (en) | 2007-03-30 | 2012-12-11 | Depuy Products, Inc. | Mobile bearing assembly |
US8075626B2 (en) | 2008-06-30 | 2011-12-13 | Depuy Products, Inc. | Orthopaedic knee prosthesis having increased axial-rotation |
US20100305710A1 (en) | 2009-05-28 | 2010-12-02 | Biomet Manufacturing Corp. | Knee Prosthesis |
US8906105B2 (en) | 2009-08-11 | 2014-12-09 | Michael D. Ries | Systems and methods for mobile bearing prosthetic knee |
-
2012
- 2012-09-11 US US13/609,389 patent/US8894715B2/en active Active
-
2014
- 2014-10-15 US US14/514,453 patent/US20150032216A1/en not_active Abandoned
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4714474A (en) * | 1986-05-12 | 1987-12-22 | Dow Corning Wright Corporation | Tibial knee joint prosthesis with removable articulating surface insert |
US20040138755A1 (en) * | 1999-06-16 | 2004-07-15 | Btg International Limited | Tibial component |
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