WO1997025006A1 - Prothese de l'articulation femoro-patellaire - Google Patents

Prothese de l'articulation femoro-patellaire Download PDF

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Publication number
WO1997025006A1
WO1997025006A1 PCT/GB1997/000032 GB9700032W WO9725006A1 WO 1997025006 A1 WO1997025006 A1 WO 1997025006A1 GB 9700032 W GB9700032 W GB 9700032W WO 9725006 A1 WO9725006 A1 WO 9725006A1
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WO
WIPO (PCT)
Prior art keywords
joint prosthesis
component
femoral
patellar
articular
Prior art date
Application number
PCT/GB1997/000032
Other languages
English (en)
Inventor
Andrew Arthur Amis
Original Assignee
Imperial College Of Science, Technology & Medicine
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Imperial College Of Science, Technology & Medicine filed Critical Imperial College Of Science, Technology & Medicine
Priority to AU13876/97A priority Critical patent/AU1387697A/en
Publication of WO1997025006A1 publication Critical patent/WO1997025006A1/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/14—Surgical saws ; Accessories therefor
    • A61B17/15—Guides therefor
    • A61B17/154—Guides therefor for preparing bone for knee prosthesis
    • A61B17/155—Cutting femur
    • 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
    • A61F2/3877—Patellae or trochleae

Definitions

  • This invention is concerned with an artificial replacement for the patellofemoral joint herein referred to as the "pfj", that forms the bearing surface between the patella 1 and the end of the femur 2 in the knee joint.
  • the patella slides over the femoral bearing surface, in what is usually referred-to as the trochlear groove, and it is damage to the articular cartilage surface in the natural knee joint (i.e. arthritis) that causes the pain that leads to patients needing a joint replacement.
  • This is often a generalised degeneration around the knee, which can require the well-known 'total knee replacement' operation.
  • the pfj has been damaged in isolation, and a total replacement would then be too destructive, if a localised implant could replace the localised damage in the pfj.
  • the pfj prosthesis consists of two parts, one to replace the bearing surface of the patella 3, the other to replace the bearing surface of the femoral trochlear groove 4.
  • a patellofemoral joint prosthesis comprising a femoral component adapted for location in the region of the femoral trochlear groove comprising an articular bearing surface, and a patellar component adapted for location within the patella and having a co-operating articular bearing surface, said femoral component comprising a segment of resilient material whose bearing surface geometry is at least partly defined by a pair of generally part convex surfaces located either side of an articular valley, said patellar component also comprising resilient material with a bearing surface formed to articulate from flexion to extension of the joint prosthesis with the bearing surface of said femoral component, the patellar bearing surface including a pair of spaced part concave depressions whose geometry permits articulation with said part convex surfaces of the femoral component, and wherein an upstanding ridge of the patellar component permits articulation along at least part of said valley from flexion to extension, the geometry of the bearing surface of said patellar component being such as
  • the patellar articulation is preferably trimmed away distally, allowing a smooth sliding engagement into and disengagement out of articulation.
  • the lowermost surfaces of the part concave depressions pass directly to surfaces which are generally flat in a proximal-distal direction extending away distally therefrom.
  • other geometry could be utilised which allows the smooth sliding of the two components into articular engagement and disengagement.
  • the extent of the segment at the lateral surface is greater than the extent at the medial surface.
  • the segment may have an upper surface edge which extends from the medial side and upwardly towards the lateral side of the femoral component.
  • the segment can have lowermost ,-jt out portions formed to avoid, in use, contact between the segment and eniscal or other bearing surfaces on the tibia in the general region of the femoral trochlear groove.
  • the segment geometry can be defined by a section revolved about a common axis of rotation based on a pair of part circles each centred on that axis of revolution and linked by a blending radius.
  • the segment geometry could be defined by a straight line that would form a cylindrical roller geometry if revolved around the ax s.
  • segment geometry could be defined by a straight line that would form a cylindrical roller geometry if revolved around the ax s.
  • the segment valley can be, for example, U-shaped w th curvature extending in the base of the "U”, or V-shaped with curvature extending in the base of the "V", although it is desired to be complementary to the upstanding ridge on the patellar component.
  • a further example would be a pfj (patellofemoral joint) prosthesis in which the femoral groove geometry is the same as in a total knee joint replacement prosthesis, that also has a tibial component.
  • a patellar component of the pfj prosthesis adapted to the geometry of the total knee joint prosthesis, this would facilitate later conversion of the pfj replacement to a total knee replacement, when the patellar component need not be removed and replaced.
  • the part concave surfaces of the patellar component are preferably part spherical surfaces and more preferably complementary to the part spherical femoral articular surfaces located at either side of the trochlear groove.
  • the patellar component part concave depressions can be so formed as to be complementary to co-operate in articulation with the said part convex surfaces to permit articulation with a substantial part of these surfaces in mutual contact from extension to flexion; moreover in such articulation the upstanding ridge preferably contacts a major part of the said articular valley.
  • patellar component part concave depressions are located relatively proximally and extend relatively distally into, for example, a flat, sloping or curved formation comprising extensions of the part concave bearing surfaces either side of the upstanding ridge.
  • Such formation can be of constant cross section.
  • the patellar component part concave depressions can be spaced either side of said upstanding ridge.
  • the patellar component distal end preferably has a chamfered or rounded/radiused off surface which extends below the plane of the lowermost surface part of the said part concave surfaces, to facilitate gliding engagement as the knee flexes.
  • One method of making the femoral component involves investment casting or forging of a suitable alloy such as a cobalt-chrome-molybdenum alloy into a bispherical shell, followed by grinding and polishing operations on the articular surfaces, as appropriate.
  • a suitable alloy such as a cobalt-chrome-molybdenum alloy
  • the reverse side can be formed in such a manner as to permit subsequent fixation to the bone by the surgeon, or for fixation onto a base which is then fixed in proper location by the surgeon.
  • One method of making the patellar component involves machining the end-face of an ultra-high molecular weight polyethylene rod using a circular bladed fly-cutter, that would form each of the part-spherical concavities, the cutter being moved distally at a constant height so as to form the distal part of the articular surfaces that has relatively constant cross-section.
  • the reverse surface could either be prepared for fixation to the patellar bone, or else for fixation to a metallic backing, that is then used for fixing to the bone.
  • Figure 1 is a cross sectional view of a right-hand knee femoral component in the form of a metallic shell-like segment indicating the geometry defining its articular bearing surface
  • Figure 2 is a part-sectional end elevation of a bispherical shell component indicating two cuts at approximately 90° tangential to the bore which can be made thereto to form the femoral component,
  • Figure 3 is a view of the end face of the right-hand knee femoral component part as applied to the femur in the femoral trochlear groove, formed with cut out portions which avoid contact with meniscal surfaces on the tibia during extension,
  • Figure 4 is a plan view of the femoral component shown n figures 1 and 3 from above indicating the preference for removing a section,
  • Figure 5 is a plan view of a left-hand knee patellar component depicting the articular bearing surfaces, this component (in mirror image form) being adapted to articulate with the femoral component shown in Figures 1, 3 and 4,
  • Figure 6 is a view of the prosthetic implant affixed to the knee joint of a patient, in flexion
  • Figure 7 is a view of the same prosthetic implant shown in Figure 6 but in the extension condition
  • Figure 8 is a view of an alternative femoral component in cross section, with flatter transverse geometry than that shown in figure 1,
  • Figure 9 is a view of a still further femoral component in cross section, with flatter transverse geometry than that shown in figure 1,
  • Figure 10 shows a femoral component that is mounted onto 3 flat cut surfaces and three stages of femoral bone preparation prior to attachment of femoral component
  • Figures 11 and 12 are views of further patellofemoral joint prostheses wherein transverse geometry of the patellar component is not widely congruent with the femoral component.
  • the femoral component 4 shown in figures 1-4 is formed primarily as a thin shell, preferably metallic, such as of cobalt-chrome alloy.
  • the bearing surface geometry shown in figures 1 and 2 is created by revolving a section 5 around a central axis 6, to form a surface of revolution about that axis.
  • the geometry used consists of two part-circles 7,7', each centred on the axis of revolution 6, linked by a blending radius 8. As the circles are revolved, so part-spherical i.e. convex bearing surfaces are created, linked by a smooth U-shaped valley.
  • the component 4 may be formed from a segment 5 (figure 2) of this revolved surface, cut by two planar cuts 9 tangential to the central bore 6', at approx 90° to each other.
  • the sideways extent of the bearing shell is determined so that it fits the natural knee, and this means that the lateral spherical surface 12 has a greater extent than the medial surface 13. This reflects the natural balance of bearing forces.
  • fixation pegs 14 On the convex bearing surface, there is a highly polished articular surface, on which the patellar component slides; on the surface underneath (not illustrated) a number of fixation pegs 14 can be provided, perhaps 3 or 4, that pass into the bone or bone cement used by the surgeon after excising damaged articular bone surface to secure it to the femur.
  • the cut out portions 24 are shaped to avoid contact with eniscal surfaces as the knee extends.
  • the patellar component 15 shown in figure 5 is basically a disc, usually of ultra high molecular weight polyethylene which has the articular bearing surface 16 on one face, and the means for fixing the disc to the patellar bone on the other face (not shown).
  • This fixation means might be a central post, or else a number of pegs 17(figure 7), which could have circular or non-circular sections.
  • a patellar component will be made with a polyethylene bearing shell secured to a metallic backing, which backing includes the fixation means.
  • the disc is preferably circular, but it could be non-circular, such as elliptical. The size of the disc could be chosen so that the edges are surrounded by patellar bone 17A, when the component will be inset, or else it may sit on a flat surface cut right across the patella.
  • the articular geometry of the patellar articulation 16 is partly congruent with that of the femoral component 5, with two part- spherical concave depressions 18 that mate with the convex part- spherical surfaces 12,13 of the femoral shell.
  • These concavities are linked by an upstanding ridge ISA, that has the same profile as the groove 8 in the femoral component, so the area of contact between the two components is continuous from one concavity to the other.
  • the congruent bearing configuration described above represents the situation when the knee is flexed as indicated in fig 6. In this situation there is a relatively large contact area 19 in flexion and correspondingly low stresses on the surfaces.
  • the patella is pulled proximally, up the anterior (frontal) aspect of the femur as depicted in fig 7. This occurs to such an extent that the patella usually moves proximally out of articulation with the femoral groove 20.
  • the bearing surface of the patellar component has been extended by, for example, removal of material 21 at a constant cross-section, from the lowermost surface of the centre of both concave depressions (i.e. where the concavity is deepest) in a distal direction.
  • the distal edges 23 of the component can be radiussed off, to prevent protrusion from the bone surface when secured by the surgeon, and minimise the risk of 'catching' or other impediment to smooth gliding action.
  • this surface adjustment is preferably asymmetric.
  • this particular articular geometry facilitates smooth sliding engagement or disengagement, i.e. taking the concavities 18 in the proximal half of the patellar component, and maintaining a constant 'extruded' section 21 in a distal direction.
  • the transverse geometry shown in Figure 1 could be relatively flatter (Figure 8), and again this geometry may, for example, be bispherical with a U-shaped valley between the spherical components, or may be inclined sloping surfaces (Figure 9), or even flat, that would cause a cylindrical geometry.
  • the geometry may also be symmetrical in the medial-lateral direction, as in Figs. 8 and 9.
  • the fixation to bone may follow bone preparation that requires flat surfaces to be cut (Figure 10), as in total knee replacement systems.
  • the cutting must be guided accurately, and a system to facilitate this is illustrated by way of example.
  • An intramedullary alignment rod s introduced into the femur ( Figure 10, A) and a cutting guide block B mounted on it.
  • the cutting guide block s aligned to be tangential to the anterior surface of the femur by means of a probe C.
  • the anterior cut D is then made by introducing a saw blade through a slot E in the guide block.
  • the guide block B and alignment rod A are removed.
  • a distal cutting guide F is located on the anterior cut surface D and on the distal surface of the femur.
  • a bur G is placed through an aperture m the distal cutting guide, the shape of the aperture controlling the area of bone which can be reached by the bur.
  • a collar H controls the depth of the bur in the bone.
  • the shape of the aperture is the same as that of the distal part of the femoral shell of the pfj prosthesis, so that the bone removed is the same as that between cut-outs 24 in Figure 3.
  • the distal guide block s removed and a chamfering guide block I is located onto the anterior and distal cuts. This contains a slot J angled approximately 45°, so that a saw introduced through it will chamfer the anterlor-distal corner of the femur.
  • An alternative embodiment would use a bur through an aperture in a guide block, facilitating preservation of bone and cartilage surfaces to either side.
  • This or another block may also contain guide holes for drilling the fixation peg 14 holes in the bone, n conjunction with a drill with a depth stop.
  • the transverse geometry of the patellar component may not be widely congruent w th the femoral component, to facilitate angular realignments and reduce medial-lateral constraint in the system.
  • the geometry remains partly congruent, and so the patellar concavities 18 match the shape of the femoral convexities 7,7'.
  • the central ridge of the patella 18A has a larger radius than the blending radius 8 of the femoral component, and so ridge 18A does not reach the full depth of the groove between the convex surfaces 7,7'.
  • the central ridge of the patellar component may be truncated 26, or the articular surfaces may not be congruent in a medial-lateral direction 27.
  • This range of medial-lateral section geometries may all be integrated with the sagittal plane geometry shown in Figures 6 and 7, that allows a smooth gliding engagement of the components as the knee flexes, followed by more congruent articulation in further knee flexion.

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  • Health & Medical Sciences (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Transplantation (AREA)
  • General Health & Medical Sciences (AREA)
  • Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Veterinary Medicine (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Animal Behavior & Ethology (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Public Health (AREA)
  • Vascular Medicine (AREA)
  • Dentistry (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Cardiology (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Prostheses (AREA)

Abstract

Prothèse de l'articulation fémoro-patellaire comprenant un composant fémoral conçu pour se placer dans la région de la rainure throchléaire fémorale comportant une surface d'appui articulaire, et un composant patellaire conçu pour se placer à l'intérieur de la rotule et comportant une surface d'appui articulaire coopérante. Ce composant fémoral comprend un segment de matière résiliente doont la géométrie de la surface d'appui est au moins partiellement définie par une paire de surfaces généralement semi-convexes se trouvant de chaque côté d'un creux articulaire, et le composant patellaire comprend également un matière résiliente dont la surface d'appui est formée pour articuler, de la flexion à l'extension, la prothèse avec la surface d'appui du composant fémoral. La surface d'appui patellaire comprend une paire de dépressions semi-concaves, espacées, dont la géométrie permet leur articulation avec les surfaces semi-convexes du composant fémoral. Une nervure verticale du composant patellaire permet l'articulation, de la flexion à l'extension, d'au moins une partie du creux, la géométrie des surfaces d'appui du composant patellaire permettant l'engagement et le désengagement coulissant de la surface articulaire fémorale.
PCT/GB1997/000032 1996-01-03 1997-01-03 Prothese de l'articulation femoro-patellaire WO1997025006A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU13876/97A AU1387697A (en) 1996-01-03 1997-01-03 Patellofemoral joint prosthesis

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9600036.9 1996-01-03
GBGB9600036.9A GB9600036D0 (en) 1996-01-03 1996-01-03 Patelofemoral joint prosthesis

Publications (1)

Publication Number Publication Date
WO1997025006A1 true WO1997025006A1 (fr) 1997-07-17

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Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1265559A1 (fr) * 2000-03-17 2002-12-18 Kinamed, Inc. Prothese personnalisee permettant de resurfacer la surface articulaire d'un femur, et son procede d'elaboration
FR2831426A1 (fr) * 2001-10-30 2003-05-02 Tornier Sa Implant rotulien et prothese de genou incorporant un tel implant
US6616696B1 (en) 1998-09-04 2003-09-09 Alan C. Merchant Modular knee replacement system
GB2386558A (en) * 2002-03-20 2003-09-24 Sheo B Tibrewal Two-part replacement patella prosthesis
US7387644B2 (en) 2003-11-07 2008-06-17 University Of Vermont And State Agricultural College Knee joint prosthesis with a femoral component which links the tibiofemoral axis of rotation with the patellofemoral axis of rotation
US8157867B2 (en) 2004-07-09 2012-04-17 Zimmer, Inc. Trochlear groove implants and related methods and instruments
US8834490B2 (en) 2001-08-28 2014-09-16 Bonutti Skeletal Innovations Llc Method for robotic arthroplasty using navigation
US8834574B2 (en) 2010-12-07 2014-09-16 Zimmer, Inc. Prosthetic patella
WO2014149934A1 (fr) * 2013-03-15 2014-09-25 Moximed, Inc. Structure et méthode de traitement de l'arthrose fémoro-patellaire
US9101443B2 (en) 2000-01-14 2015-08-11 Bonutti Skeletal Innovations Llc Methods for robotic arthroplasty
US10624754B2 (en) 2014-03-07 2020-04-21 Arthrosurface Incorporated System and method for repairing articular surfaces
US10624748B2 (en) 2014-03-07 2020-04-21 Arthrosurface Incorporated System and method for repairing articular surfaces
US10624752B2 (en) 2006-07-17 2020-04-21 Arthrosurface Incorporated Tibial resurfacing system and method
US10624749B2 (en) 2003-02-24 2020-04-21 Arthrosurface Incorporated Trochlear resurfacing system and method
WO2020092335A1 (fr) * 2018-10-29 2020-05-07 Arthrosurface Incorporated Implants de surface articulaire dotés d'alvéoles
US10695096B2 (en) 2013-04-16 2020-06-30 Arthrosurface Incorporated Suture system and method
US10893948B2 (en) 2017-11-02 2021-01-19 Howmedica Osteonics Corp. Rotary arc patella articulating geometry
US10945743B2 (en) 2009-04-17 2021-03-16 Arthrosurface Incorporated Glenoid repair system and methods of use thereof
US10959740B2 (en) 2006-12-11 2021-03-30 Arthrosurface Incorporated Retrograde resection apparatus and method
US11160663B2 (en) 2017-08-04 2021-11-02 Arthrosurface Incorporated Multicomponent articular surface implant
US11191552B2 (en) 2012-07-03 2021-12-07 Arthrosurface, Incorporated System and method for joint resurfacing and repair
US11478358B2 (en) 2019-03-12 2022-10-25 Arthrosurface Incorporated Humeral and glenoid articular surface implant systems and methods
US11478259B2 (en) 2009-04-17 2022-10-25 Arthrosurface, Incorporated Glenoid resurfacing system and method
US11607319B2 (en) 2014-03-07 2023-03-21 Arthrosurface Incorporated System and method for repairing articular surfaces
CN115944435A (zh) * 2023-03-14 2023-04-11 北京爱康宜诚医疗器材有限公司 髌骨假体
US11712276B2 (en) 2011-12-22 2023-08-01 Arthrosurface Incorporated System and method for bone fixation

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4944103B2 (ja) 2005-05-20 2012-05-30 スミス アンド ネフュー インコーポレーテッド 膝蓋大腿関節インプラント及び器具

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FR2594323A1 (fr) * 1986-02-18 1987-08-21 Matco Prothese complete de rotule sans ciment
EP0582514A1 (fr) * 1992-08-03 1994-02-09 IMPLANTS ORTHOPEDIQUES TOUTES APPLICATIONS, S.A.R.L. dite: Prothèse du genou
FR2700260A1 (fr) * 1993-01-08 1994-07-13 Bouvet Jean Claude Pièce rotulienne artificielle pour prothèse de genou.
DE4310968A1 (de) * 1993-04-03 1994-10-06 Kubein Meesenburg Dietmar Künstliches Gelenk zum Ersatz der menschlichen Kniescheibe
EP0685210A1 (fr) * 1994-05-13 1995-12-06 SMITH & NEPHEW RICHARDS FRANCE Implant trochléen pour prothèse fémoro-patellaire et son instrumentation de pose

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Publication number Priority date Publication date Assignee Title
US4151615A (en) * 1977-06-29 1979-05-01 Hall Thomas D Prosthetic patello-femoral joint
FR2594323A1 (fr) * 1986-02-18 1987-08-21 Matco Prothese complete de rotule sans ciment
EP0582514A1 (fr) * 1992-08-03 1994-02-09 IMPLANTS ORTHOPEDIQUES TOUTES APPLICATIONS, S.A.R.L. dite: Prothèse du genou
FR2700260A1 (fr) * 1993-01-08 1994-07-13 Bouvet Jean Claude Pièce rotulienne artificielle pour prothèse de genou.
DE4310968A1 (de) * 1993-04-03 1994-10-06 Kubein Meesenburg Dietmar Künstliches Gelenk zum Ersatz der menschlichen Kniescheibe
EP0685210A1 (fr) * 1994-05-13 1995-12-06 SMITH & NEPHEW RICHARDS FRANCE Implant trochléen pour prothèse fémoro-patellaire et son instrumentation de pose

Cited By (46)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6616696B1 (en) 1998-09-04 2003-09-09 Alan C. Merchant Modular knee replacement system
US9795394B2 (en) 2000-01-14 2017-10-24 Bonutti Skeletal Innovations Llc Method for placing implant using robotic system
US9192459B2 (en) 2000-01-14 2015-11-24 Bonutti Skeletal Innovations Llc Method of performing total knee arthroplasty
US9101443B2 (en) 2000-01-14 2015-08-11 Bonutti Skeletal Innovations Llc Methods for robotic arthroplasty
EP1265559A4 (fr) * 2000-03-17 2007-12-19 Kinamed Inc Prothese personnalisee permettant de resurfacer la surface articulaire d'un femur, et son procede d'elaboration
EP1265559A1 (fr) * 2000-03-17 2002-12-18 Kinamed, Inc. Prothese personnalisee permettant de resurfacer la surface articulaire d'un femur, et son procede d'elaboration
US10231739B1 (en) 2001-08-28 2019-03-19 Bonutti Skeletal Innovations Llc System and method for robotic surgery
US10321918B2 (en) 2001-08-28 2019-06-18 Bonutti Skeletal Innovations Llc Methods for robotic surgery using a cannula
US10470780B2 (en) 2001-08-28 2019-11-12 Bonutti Skeletal Innovations Llc Systems and methods for ligament balancing in robotic surgery
US9763683B2 (en) 2001-08-28 2017-09-19 Bonutti Skeletal Innovations Llc Method for performing surgical procedures using optical cutting guides
US8834490B2 (en) 2001-08-28 2014-09-16 Bonutti Skeletal Innovations Llc Method for robotic arthroplasty using navigation
US9060797B2 (en) 2001-08-28 2015-06-23 Bonutti Skeletal Innovations Llc Method of preparing a femur and tibia in knee arthroplasty
US8840629B2 (en) 2001-08-28 2014-09-23 Bonutti Skeletal Innovations Llc Robotic arthroplasty system including navigation
US8858557B2 (en) 2001-08-28 2014-10-14 Bonutti Skeletal Innovations Llc Method of preparing a femur and tibia in knee arthroplasty
FR2831426A1 (fr) * 2001-10-30 2003-05-02 Tornier Sa Implant rotulien et prothese de genou incorporant un tel implant
EP1308142A3 (fr) * 2001-10-30 2004-01-21 Tornier Sa Implant rotulien et prothèse de genou incorporant un tel implant
US6802864B2 (en) 2001-10-30 2004-10-12 Toriner Sa Patellar implant and knee prosthesis incorporating such an implant
GB2386558B (en) * 2002-03-20 2005-09-14 Sheo B Tibrewal Apparatus for patella replacement
GB2386558A (en) * 2002-03-20 2003-09-24 Sheo B Tibrewal Two-part replacement patella prosthesis
US11337819B2 (en) 2003-02-24 2022-05-24 Arthrosurface Incorporated Trochlear resurfacing system and method
US10624749B2 (en) 2003-02-24 2020-04-21 Arthrosurface Incorporated Trochlear resurfacing system and method
US7387644B2 (en) 2003-11-07 2008-06-17 University Of Vermont And State Agricultural College Knee joint prosthesis with a femoral component which links the tibiofemoral axis of rotation with the patellofemoral axis of rotation
US8157867B2 (en) 2004-07-09 2012-04-17 Zimmer, Inc. Trochlear groove implants and related methods and instruments
US8852195B2 (en) 2004-07-09 2014-10-07 Zimmer, Inc. Guide templates for surgical implants and related methods
US11471289B2 (en) 2006-07-17 2022-10-18 Arthrosurface Incorporated Tibial resurfacing system and method
US10624752B2 (en) 2006-07-17 2020-04-21 Arthrosurface Incorporated Tibial resurfacing system and method
US10959740B2 (en) 2006-12-11 2021-03-30 Arthrosurface Incorporated Retrograde resection apparatus and method
US11478259B2 (en) 2009-04-17 2022-10-25 Arthrosurface, Incorporated Glenoid resurfacing system and method
US10945743B2 (en) 2009-04-17 2021-03-16 Arthrosurface Incorporated Glenoid repair system and methods of use thereof
US8834574B2 (en) 2010-12-07 2014-09-16 Zimmer, Inc. Prosthetic patella
US11712276B2 (en) 2011-12-22 2023-08-01 Arthrosurface Incorporated System and method for bone fixation
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GB9600036D0 (en) 1996-03-06

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