USRE37277E1 - Tibial prosthetic implant with offset stem - Google Patents

Tibial prosthetic implant with offset stem Download PDF

Info

Publication number
USRE37277E1
USRE37277E1 US08529671 US52967195A USRE37277E US RE37277 E1 USRE37277 E1 US RE37277E1 US 08529671 US08529671 US 08529671 US 52967195 A US52967195 A US 52967195A US RE37277 E USRE37277 E US RE37277E
Authority
US
Grant status
Grant
Patent type
Prior art keywords
base
tibia
stem
plate
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.)
Expired - Lifetime
Application number
US08529671
Inventor
James L. Baldwin
Steven I. Whitlock
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wright Medical Technology Inc
Original Assignee
Hayes Medical Inc
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
Grant date

Links

Images

Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2/38Joints for elbows or knees
    • A61F2/389Tibial components

Abstract

A tibial prosthetic implant includes a base or base plate with an offset tibial stem. The base includes an inferior surface adapted to abut a resected surface of a patient's tibia and forms a base for articulating surfaces adapted to articulate with the patient's femoral condyles. The longitudinal center axis of the tibial stem extends from the inferior surface of the base and is offset from a center of the base. The offset places the stem in position to extend into the central canal of the tibia so that it does not substantially interfere with the cortical bone when the inferior surface of the base substantially abuts and aligns with the resected surface of the tibia.

Description

BACKGROUND OF THE INVENTION

This invention relates to implants for total knee arthroplasty, and more particularly, to an improved stemmed tibial prosthetic implant.

Total knee arthroplasty involves providing new articulating surfaces for the tibia, femur, and patella. The most common technique for providing new articulating surfaces for the tibia involves resecting an upper portion of the tibia and then attaching a prosthetic implant to the tibia over the resected surface. The tibial implant includes a base adapted to abut the resected surface of the tibia and an articulating portion which includes the new articulating surfaces. The base of the implant has a shape that is adapted to generally approximate the shape of the resected surface of the tibia so that the implant generally aligns with and completely covers the resected surface when the base is properly attached to the tibia.

The implant may also include a plurality of pegs extending from the lower or inferior surface of the base. The pegs are adapted to extend into the bone of the tibia when the implant is secured to the resected surface and provide enhanced torsional stability about the longitudinal axis of the tibia. In addition or alternatively to pegs, a stem may extend from the inferior surface of the base so as to extend a substantial distance into the tibia when the implant is attached over the resected surface. Tibial stems provide further torsional stability and axial strength by providing more surface area for contact with the bone. The stem also provides a “keel” effect to prevent the tibial implant from toggling or wobbling.

The tibia itself comprises an outer layer of hard cortical bone and a central canal of relatively soft cancellous bone. Much of the strength of the tibia is provided by the cortical bone. In a normally shaped tibia, the central canal is offset from the center of the tibial articulating surfaces or the center of the tibial plateau. The stems of prior tibial implants used for normally shaped tibias were, however, positioned centrally to the implant base. Although the central location of the stem allowed a particular implant to be used for either the right or left knee, this stem position resulted in serious drawbacks. The primary drawback was that the centrally located stem was substantially offset from the center of the tibial canal itself when the base of the implant was aligned with the resected tibial surface. In fact, stems located centrally to the base occasionally contacted the posterior and/or lateral cortical bone of the tibia. This interference with the cortical bone sometimes prevented the base of the implant from seating flush against the resected surface of the tibia, thereby inhibiting adequate initial stability and fixation which is essential for successful knee arthroplasty.

SUMMARY OF THE INVENTION

It is a broad object of the invention to provide a stemmed tibial implant that overcomes the above-described problems and others associated with prior tibial implants used for patients having normally shaped tibias.

In order to accomplish this object, a tibial implant according to the invention for use in a normally shaped tibia includes a stem that is offset from the center of the implant base. The offset is within a particular range for use in a normally shaped tibia. Similarly to prior tibial implants, the present implant includes a base, an articulating portion, and attachment means for securing the implant to a patient's tibia during the implantation procedure. However, the tibial implant according to the invention also includes a stem extending from a point on the inferior surface of the base that is offset from a center point of the base. This offset enables the stem to extend into the central tibial canal when the implant is attached to the normally shaped tibia with the inferior surface of the base abutting and aligning with the resected surface. The offset stem does not extend into or otherwise interfere with the cortical bone of the tibia. Also, optimal keel effect is achieved when the stem is central to the condylar weight bearing surface, providing equally dense bone on either side of the stem.

The optimum stem offset varies from patient to patient. Normally, however, the stem is offset anteriorly or forward of the center point of the base and also medially or to the inside with respect to the center point of the base.Although the optimum stem offset varies from patient to patient, normally shaped tibias will accept in the central tibial canal a stem that is offset anteriorly or forward of the center point of the base and also medially or to the inside with respect to the center point of the base. The anterior offset is preferably in the range of approximately 59% to 68% of the total anterior-posterior medial condyle depth dimension as measured from the outermost posterior edge of the base. The medial offset is preferably in the range of approximately 52% to 55% of the total base medial-lateral width dimension, as measured from the outermost lateral edge of the base.

The stem may be cylindrical in shape, square, or any other shape desired for the particular application. The preferred stem, however, has a cruciate transverse cross-sectional shape and comprises a central root portion with four webs extending at different angular orientations from the root portion. Each web extends generally toward a different corner of the base and includes an enlarged portion proximal to the base and a relatively narrow portion at the end of the stem distal to the base.

These and other objects, advantages, and features of the invention will be apparent from the following description of the preferred embodiments, considered along with the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is an exploded view in perspective of a stemmed tibial prosthetic implant embodying the principles of the invention.

FIG. 2 is a top plan view of the prosthetic implant shown in FIG. 1 as attached to a patient's tibia.

FIG. 3 is a front view of the attached prosthetic implant shown in FIG. 2 with the tibia shown in phantom.

FIG. 4 is a right side view of the attached implant shown in FIG. 2 with the tibia shown in phantom.

DESCRIPTION OF THE PREFERRED EMBODIMENTS

Referring particularly to FIG. 1 a tibial implant 10 embodying the principles of the invention includes a base 12 and an articulating portion 14. A stem 16, and preferably, a plurality of pegs 18 are connected to the base 12 of the implant. As shown in FIGS. 2 and 3, the base 12 also includes two openings 24 for receiving bone screws 26. The bone screws 26 along with the openings 24 form attachment means for attaching the implant 10 to the patient's tibia as described below.

Although the base 12 and articulating portion 14 may be integrally formed, the preferred form of the invention shown in the figures is modular with a base plate forming the base 12 and a separate insert comprising the articulating portion 14. The base plate and insert are adapted to connect together by suitable means to form the implant 10. The articulating portion or insert 14 is preferably formed from a suitable plastic material and includes articulating surfaces 20 adapted to articulate with the femoral condyles (not shown) of the patient's knee. The preferred base or base plate 12 comprises a planar plate of a biologically compatible material and includes a lower or inferior surface 22 to which the stem 16 and pegs 18 are connected. The stem 16 and pegs 18 may be integrally formed with the base 12 or may be formed separately and connected by suitable means.

Referring to FIGS. 2 through 4, the transverse cross-sectional shape of the base 12 and the shape of the inferior surface 22 are both adapted to approximate the shape of the tibial plateau 28, and particularly, a resected surface 30 through the tibial plateau. As used herein a transverse cross-section through the base 12 is along a plane extending parallel to the plane of the inferior surface 22. Also, in order to better approximate the shape of the resected surface 30, the base 12 is asymmetrical about a medial-lateral center line. That is, base 12 includes a lateral portion 32 adapted to approximate the shape of the lateral tibial plateau and a larger medial portion 34 adapted to approximate the shape of the medial tibial plateau. This asymmetrical base shape serves to maximize the base contact or overlap with the cortical bone 36 of the tibia 38 thereby providing strength while minimizing any overhang over the cortical bone which could interfere with soft tissue extending to or through the knee joint (not shown). Regardless of the shape of the base 12, the base has a center 40 that is defined by the intersection of the medial-lateral center line 42 and the anterior-posterior center line 44 as shown in FIG. 2.

Referring still to FIGS. 2 through 4, the longitudinal axis 48 of the stem 16 is offset from the center 40 of the base 12. The offset enables the stem 16 to extend into the central canal 50 of the tibia 38 when the base 12 is positioned over the resected surface 30 with the inferior surface 22 abutting and generally aligned with the resected surface. As shown particularly in FIGS. 3 and 4, the stem 16 does not extend into the cortical bone 36 of the tibia 38. Thus, the cortical bone 36 below the resected surface 30 is left intact with its full natural strength. Also, since the stem 16 does not extend into the cortical bone 36, the implantation procedure does not require boring or broaching the hard cortical bone and the trauma to the area that such boring or broaching necessitates. Furthermore, optimal keel effect is achieved when the stem is central to the condylar weight bearing surface, providing equally dense bone on either side of the stem.

As shown best in FIG. 2, the offset required for the desired stem position is both medial and anterior from the center 40 of the base 12 for normally shaped tibias. Although the exact offset will vary from patient to patient, the preferred offset in the medial direction is between 52% to 55% of the total medial-lateral width dimension as measured from the outermost lateral edge 54 of the base 12 along the anterior-posterior center line 42. The preferred offset in the anterior direction is in a range between 59% to 68% of the total anterior/posterior medial condyle depth dimension as measured from the outermost posterior edge 56 of the base 12 along the medial-lateral center line 44. This medial offset in the range of 52% to 55 % and anterior offset in the range between 59 % to 68 % produces the desired stem position in the cancellous bone of the tibial central canal for most normally shaped tibias such as the tibia illustrated in FIGS. 3 and 4.

Although any stem shape may be employed in a tibial implant embodying the principles of the invention, the preferred stem 16 forms a cruciate shape. The cruciate-shaped stem 16 includes a center root portion 60 and a plurality of longitudinally aligned webs extending from the root at different angular orientations about the stem longitudinal axis 48. In particular, the stem 16 includes a medial-posterior web 62, a lateral-posterior web 64, a medial-anterior web 66, and a lateral-anterior web 68. Each web includes an enlarged portion 70 at the end proximal to the base 12, narrowing down continuously to a relative narrower portion 72 at the end of the stem distal to the base. Also, as shown best in FIG. 2, the enlarged portions 70 of the lateral-posterior and medial-posterior webs 64 and 62 extend further from the center root 60 of the stem 16 than the enlarged portions of the lateral-anterior and medial-anterior webs 68 and 66. These web shapes generally follow the internal contour of the central canal 50 of the tibia to maximize contact with the cancellous bone in the canal.

Implanting the stemmed tibial implant 10 embodying the principles of the invention includes first resecting an upper portion of the patient's tibia 38 to remove the natural articulating surfaces and form a suitable resected surface 30. The resected surface 30 is preferably planar and extends substantially transversely to the longitudinal axis of the tibia 38 in the anterior-posterior view and parallel to the anatomic posterior slope of the tibia in the medial-lateral view of the tibia.

Once the desired resected surface 30 is produced, the base 12 of the implant 10 shown in FIGS. 1 through 4 is positioned with the inferior surface 22 abutting and generally aligned with the resected surface. The base 12 is fixed in place with bone screws 26 extending through the screw openings 24 in the base. With the inferior surface 22 of the base 12 abutting the resected surface 30 of the patient's tibia 38 and with the base properly aligned, the stem 16 extends into the central canal 50 of the tibia and does not interfere with the cortical bone 36. Although some broaching will be required to produce an opening for the stem 16, the offset position of the stem will necessitate little, if any, broaching of the cortical bone 36, only broaching of the much softer cancellous bone in the central tibial canal 50.

The above described preferred embodiments are intended to illustrate the principles of the invention, but not to limit the scope of the invention. Various other embodiments and modifications to these preferred embodiments may be made by those skilled in the art without departing from the scope of the following claims. For example, although the embodiment shown in the drawings includes a plurality of pegs 18, an implant embodying the principles of the invention may include only the offset stem 16. Also, although not shown specifically in the drawings, the inferior surface 22 of the base 12, the pegs 18 if present, and the stem 16 may all include a layer of porous material adapted to provide enhanced bonding to the bone.

Claims (12)

We claim:
1. A tibial prosthetic implant for patients having normally shaped tibias, the implant comprising:
(a) a base having an inferior surface adapted to substantially abut a resected surface of a patient's tibia and a transverse cross-sectional shape adapted to approximate a peripheral shape of the resected surface of the tibia;
(b) an articulating portion connected to the base, the articulating portion of the implant having articulating surfaces opposite the inferior surface of the base for articulating with a patient's femoral condyles;
(c) attachment means for securing the base to the resected surface of the tibia so that the inferior surface of the base substantially abuts and aligns with the resected surface of the tibia; and
(d) a tibial stem extending from the inferior surface of the base, the tibial stem having a longitudinal center axis that is offset anteriorly and medially from a center of the base such that the stem is in position to extend into the central canal of the patient's tibia without substantially interfering with the cortical bone of the tibia when the inferior surface of the base abuts and aligns with the resected surface of the tibia. ; and
(e) wherein the longitudinal center axis of the tibial stem is offset anteriorly from the center of the base a distance that is between 59 % to 68 % of a total anterior-posterior medial condyle depth dimension of the base as measured from an outermost posterior edge of the base, and wherein the longitudinal center axis of the tibial stem is offset medially from the center of the base a distance that is between 52 % to 55 % of a total medial-lateral width dimension of the base as measured from an outermost lateral edge of the base.
2. The tibial prosthetic implant of claim 1 wherein the tibial stem includes:
(a) a central root portion extending an entire length of the tibial stem; and
(b) a medial-posterior web extending generally medially and posteriorly from the stem central root portion, a lateral-posterior web extending generally laterally and posteriorly from the stem central root portion, a medial-anterior web extending substantially medially and anteriorly from the stem central root portion, and a lateral-anterior web extending generally laterally and anteriorly from the stem central root portion, each web having an enlarged portion at an end of the stem proximal to the inferior surface of the base and a relatively narrower portion at an end of the stem distal of the base.
3. A tibial prosthetic implant comprising:
(a) a base having an inferior surface adapted to substantially abut a resected surface of a patient's tibia and a transverse cross-sectional shape adapted to approximate a peripheral shape of the resected surface of the tibia;
(b) an articulating portion connected to the base, the articulating portion of the implant having articulating surfaces opposite the inferior surface of the base for articulating with a patient's femoral condyles;
(c) attachment means for securing the base to the resected surface of the tibia so that the inferior surface of the base substantially abuts and aligns with the resected surface of the tibia; and
(d) a tibia stem extending from the inferior surface of the base, the tibial stem having a longitudinal center axis that is offset medially from a center of the base such that the stem is in position to extend into the central canal of the patient's tibia without substantially interfering with the cortical bone of the tibia when the inferior surface of the base abuts and aligns with the resected surface of the tibia.
4. The tibial prosthetic implant of claim 3 wherein:
(a) the longitudinal center axis of the tibial stem is offset medially from the center of the base a distance that is between 52% and 55% of a total medial-lateral width dimension of the base as measured from an outermost lateral edge of the base.
5. A base plate for a modular tibial prosthetic implant for patients having normally shaped tibias, the base plate comprising:
(a) a plate of material having an inferior surface adapted to substantially abut a resected surface of a patient's tibia; and
(b) a tibial stem extending from the inferior surface of the plate, the tibial stem having a longitudinal center axis that is offset anteriorly and medially from a center of the plate such that the stem is in position to extend into the central canal of the patient's tibia without substantially interfering with the cortical bone of the tibia when the inferior surface of the plate substantially abuts the resected surface of the tibia and the center of the plate aligns with a center of the resected surface of the tibia. and
(c) wherein the longitudinal center axis of the tibial stem of offset anteriorly from the center of the plate a distance that is between 59 % to 68 % of a total anterior-posterior medial condyle depth dimension of the plate as measured from an outermost posterior edge of the plate, and wherein the longitudinal center axis of the tibial stem is offset medially from the center of the plate a distance that is between 52 % to 55 % of a total medial-lateral width dimension of the plate as measured from an outermost lateral edge of the plate.
6. The tibial prosthetic implant of claim 5 wherein:
(a) the longitudinal center axis of the tibial stem is offset anteriorly from the center axis of the plate a distance that is between 59% to 68% of a total anterior-posterior medial condyle depth dimension of the plate as measured from an outermost posterior edge of the plate; and
(b) the longitudinal center axis of the tibial stem is offset medially from the center of the plate a distance that is between 52% to 55% of a total medial-lateral width dimension of the plate as measured from an outermost lateral edge of the plate.
7. A base plate for a modular tibial prosthetic implant, the base plate comprising:
(a) a plate of material having an inferior surface adapted to substantially abut a resected surface of a patient's tibia; and
(b) a tibial stem extending from the inferior surface of the plate, the tibial stem having a longitudinal center axis that is offset medially from a center of the plate, such that the stem is in position to extend into the central canal of the patient's tibia without substantially interfering with the cortical bone of the tibia when the inferior surface of the plate substantially abuts the resected surface of the tibia and the center of the plate aligns with a center of the resected surface of the tibia.
8. The base plate of claim 7 wherein:
(a) a longitudinal center axis of the tibial stem is offset medially from the center of the plate a distance that is between 52% to 55% of a total medial-lateral width dimension of the plate as measured from an outermost lateral edge of the plate.
9. A tibial prosthetic implant of the type having a base that includes an inferior surface adapted to substantially abut a resected surface of a patient's tibia so as to support articulating surfaces that are adapted to articulate with the patient's femoral condyles, wherein the improvement comprises:
(a) a tibial stem extending from the inferior surface of the base, the tibial stem having a longitudinal center axis that is offset anteriorly and medially from a center of the base such that the stem is in position to extend into the central canal of the patient's tibia without substantially interfering with the cortical bone of the tibia when the inferior surface of the base abuts the resected surface of the tibia and the center of the base aligns with a center of the resected surface of the tibia. and
(b) wherein the longitudinal center axis of the tibial stem is offset anteriorly from the center of the base a distance that is between 59 % to 68 % of a total anterior-posterior medial condyle depth dimension of the base as measured from an outermost posterior edge of the base, and wherein the longitudinal center axis of the tibial stem is offset medially from the center of the base a distance that is between 52 % to 55 % of a total medial-lateral width dimension of the base as measured from an outermost lateral edge of the base.
10. The tibial prosthetic implant of claim 9 wherein:
(a) a longitudinal center axis of the tibial stem is offset anteriorly from the center of the base a distance that is between 59% to 68% of a total anterior-posterior medial condyle depth dimension of the base as measured from an outermost posterior edge of the base; and
(b) the longitudinal center axis of the tibial stem is offset medially from the center of the base a distance that is between 52% to 55% of a total medial-lateral width dimension of the base as measured from any outermost lateral edge of the base.
11. A tibial prosthetic implant of the type having a base that includes an inferior surface adapted to substantially abut a resected surface of a patient's tibia so as to support articulating surfaces that are adapted to articulate with the patient's femoral condyles, wherein the improvement comprises:
(a) a tibial stem extending from the inferior surface of the base, the tibial stem having a longitudinal center axis that is offset medially from a center of the base such that the stem is in position to extend into a central canal of the patient's tibia when the inferior surface of the base abuts the resected surface of the tibia and the center of the base aligns with a center of the resected surface of the tibia.
12. The tibial prosthetic implant of claim 11 wherein:
(a) the longitudinal center axis of the tibial stem is offset medially from the center of the base a distance that is between 52% to 55% of a total medial-lateral width dimension of the base as measured from an outermost lateral edge of the base.
US08529671 1992-09-04 1995-09-18 Tibial prosthetic implant with offset stem Expired - Lifetime USRE37277E1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US07940441 US5271737A (en) 1992-09-04 1992-09-04 Tibial prosthetic implant with offset stem
US08529671 USRE37277E1 (en) 1992-09-04 1995-09-18 Tibial prosthetic implant with offset stem

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08529671 USRE37277E1 (en) 1992-09-04 1995-09-18 Tibial prosthetic implant with offset stem

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
US07940441 Reissue US5271737A (en) 1992-09-04 1992-09-04 Tibial prosthetic implant with offset stem

Publications (1)

Publication Number Publication Date
USRE37277E1 true USRE37277E1 (en) 2001-07-10

Family

ID=25474847

Family Applications (2)

Application Number Title Priority Date Filing Date
US07940441 Expired - Fee Related US5271737A (en) 1992-09-04 1992-09-04 Tibial prosthetic implant with offset stem
US08529671 Expired - Lifetime USRE37277E1 (en) 1992-09-04 1995-09-18 Tibial prosthetic implant with offset stem

Family Applications Before (1)

Application Number Title Priority Date Filing Date
US07940441 Expired - Fee Related US5271737A (en) 1992-09-04 1992-09-04 Tibial prosthetic implant with offset stem

Country Status (1)

Country Link
US (2) US5271737A (en)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6482209B1 (en) 2001-06-14 2002-11-19 Gerard A. Engh Apparatus and method for sculpting the surface of a joint
US20030144740A1 (en) * 2002-01-25 2003-07-31 Eric Kolb Centralizing cement plug with countersink
US6723102B2 (en) 2001-06-14 2004-04-20 Alexandria Research Technologies, Llc Apparatus and method for minimally invasive total joint replacement
US20060195195A1 (en) * 2003-07-17 2006-08-31 Albert Burstein Mobile bearing knee prosthesis
US20070179627A1 (en) * 2005-12-21 2007-08-02 Gustilo Ramon B Tibial component with a conversion module for a knee implant
US7422605B2 (en) 2003-07-17 2008-09-09 Exactech, Inc. Mobile bearing knee prosthesis
US20080221700A1 (en) * 2005-08-31 2008-09-11 Zimmer, Gmbh Implant
US20090036995A1 (en) * 2007-07-31 2009-02-05 Zimmer, Inc. Joint space interpositional prosthetic device with internal bearing surfaces
US20090048679A1 (en) * 2006-02-09 2009-02-19 Zimmer Gmbh Implant
US20090187252A1 (en) * 2006-04-28 2009-07-23 Zimmer Gmbh Implant
US20100016980A1 (en) * 2008-07-18 2010-01-21 Zimmer Gmbh Base component for a tibial implant
US20110082559A1 (en) * 2009-10-06 2011-04-07 Wright Medical Technology, Inc. Tibial implant base
WO2012018567A1 (en) * 2010-07-24 2012-02-09 Zimmer, Inc. Asymmetric tibial components for a knee prosthesis
US8308807B2 (en) 2005-11-09 2012-11-13 Zimmer, Gmbh Implant with differential anchoring
US8591594B2 (en) 2010-09-10 2013-11-26 Zimmer, Inc. Motion facilitating tibial components for a knee prosthesis
US8628580B2 (en) 2010-07-24 2014-01-14 Zimmer, Inc. Tibial prosthesis
US8758444B2 (en) 2011-11-21 2014-06-24 Zimmer, Inc. Tibial baseplate with asymmetric placement of fixation structures
US9381090B2 (en) 2010-07-24 2016-07-05 Zimmer, Inc. Asymmetric tibial components for a knee prosthesis

Families Citing this family (79)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993024079A1 (en) * 1992-05-27 1993-12-09 Astra Aktiebolag Knee joint prosthesis
US6102955A (en) * 1995-01-19 2000-08-15 Mendes; David Surgical method, surgical tool and artificial implants for repairing knee joints
US5613970A (en) * 1995-07-06 1997-03-25 Zimmer, Inc. Orthopaedic instrumentation assembly having an offset bushing
US5634927A (en) * 1995-07-06 1997-06-03 Zimmer, Inc. Sizing plate and drill guide assembly for orthopaedic knee instrumentation
ES2126497B1 (en) * 1996-11-13 1999-12-01 Traiber S A Improvements in knee prosthesis.
US5782920A (en) * 1996-11-14 1998-07-21 Johnson & Johnson Professional, Inc. Offset coupling for joint prosthesis
US5957979A (en) * 1997-12-12 1999-09-28 Bristol-Myers Squibb Company Mobile bearing knee with metal on metal interface
JP4115625B2 (en) * 1998-05-13 2008-07-09 デピュイ・オーソピーディックス・インコーポレイテッド Tibial tray having an adjustable keel portion
US6149687A (en) * 1998-07-10 2000-11-21 Sulzer Orthopedics Inc. Offset trial stem
US6146424A (en) * 1998-07-30 2000-11-14 Sulzer Orthopedics Inc. Offset press-fit tibial stem
US6162255A (en) * 1998-10-15 2000-12-19 Depuy Orthopaedics, Inc. Stem offset mechanism for joint prosthesis
US6214052B1 (en) 1999-01-19 2001-04-10 Sulzer Orthopedics Inc. Tibial component with a reversible, adjustable stem
US20050209703A1 (en) * 1999-04-02 2005-09-22 Fell Barry M Surgically implantable prosthetic system
US7297161B2 (en) * 1999-05-10 2007-11-20 Fell Barry M Surgically implantable knee prosthesis
US7491235B2 (en) * 1999-05-10 2009-02-17 Fell Barry M Surgically implantable knee prosthesis
US20050033424A1 (en) * 1999-05-10 2005-02-10 Fell Barry M. Surgically implantable knee prosthesis
US7338524B2 (en) * 1999-05-10 2008-03-04 Fell Barry M Surgically implantable knee prosthesis
US6966928B2 (en) * 1999-05-10 2005-11-22 Fell Barry M Surgically implantable knee prosthesis having keels
DE60018924D1 (en) * 1999-06-04 2005-04-28 Sdgi Holdings Inc Artificial intervertebral implant
DE59914691D1 (en) 1999-07-02 2008-04-24 Spine Solutions Inc Intervertebral implant
US6210444B1 (en) * 1999-10-26 2001-04-03 Bristol-Myers Squibb Company Tibial knee component with a mobile bearing
US6379388B1 (en) * 1999-12-08 2002-04-30 Ortho Development Corporation Tibial prosthesis locking system and method of repairing knee joint
US8920509B2 (en) 2000-04-10 2014-12-30 Biomet Manufacturing, Llc Modular radial head prosthesis
US8535382B2 (en) 2000-04-10 2013-09-17 Biomet Manufacturing, Llc Modular radial head prostheses
US8114163B2 (en) 2000-04-10 2012-02-14 Biomet Manufacturing Corp. Method and apparatus for adjusting height and angle for a radial head
US6673114B2 (en) 2000-05-03 2004-01-06 Smith & Nephew, Inc. Multi modular trialing system and instrumentation
EP1337205A1 (en) * 2000-09-01 2003-08-27 Eugene M. Wolf Facile total shoulder arthroplasty apparatus and method
US6558426B1 (en) 2000-11-28 2003-05-06 Medidea, Llc Multiple-cam, posterior-stabilized knee prosthesis
US6953479B2 (en) 2001-07-16 2005-10-11 Smith & Nephew, Inc. Orthopedic implant extension
US6676705B1 (en) 2001-09-13 2004-01-13 Eugene M. Wolf Variable tilt angle taper lock shoulder prosthesis
US6923832B1 (en) 2002-03-21 2005-08-02 Trigon Incorporated Revision tibial component
US7182786B2 (en) * 2002-04-25 2007-02-27 Zimmer Technology, Inc. Modular bone implant, tool, and method
US7799086B2 (en) * 2002-04-25 2010-09-21 Zimmer Technology, Inc. Modular bone implant, tools, and method
US7867236B2 (en) * 2003-12-30 2011-01-11 Zimmer, Inc. Instruments and methods for preparing a joint articulation surface for an implant
US7615081B2 (en) * 2002-05-24 2009-11-10 Zimmer, Inc. Femoral components for knee arthroplasty
EP1555963A4 (en) 2002-10-23 2008-12-31 Mako Surgical Corp Modular femoral component for a total knee joint replacement for minimally invasive implantation
US7364589B2 (en) * 2003-02-12 2008-04-29 Warsaw Orthopedic, Inc. Mobile bearing articulating disc
DE10320034A1 (en) * 2003-05-02 2004-11-18 Siebel, Thomas, Dr. knee prosthesis
US7803162B2 (en) 2003-07-21 2010-09-28 Spine Solutions, Inc. Instruments and method for inserting an intervertebral implant
US7691146B2 (en) 2003-11-21 2010-04-06 Kyphon Sarl Method of laterally inserting an artificial vertebral disk replacement implant with curved spacer
US8852195B2 (en) * 2004-07-09 2014-10-07 Zimmer, Inc. Guide templates for surgical implants and related methods
US7575600B2 (en) 2004-09-29 2009-08-18 Kyphon Sarl Artificial vertebral disk replacement implant with translating articulation contact surface and method
US7998217B1 (en) 2005-02-02 2011-08-16 Biomet Manufacturing Corp. Modular offset stem implants
US8317797B2 (en) * 2005-02-08 2012-11-27 Rasmussen G Lynn Arthroplasty systems and methods for optimally aligning and tensioning a knee prosthesis
US7927336B2 (en) * 2005-02-08 2011-04-19 Rasmussen G Lynn Guide assembly for guiding cuts to a femur and tibia during a knee arthroplasty
US8303597B2 (en) 2005-02-08 2012-11-06 Rasmussen G Lynn Systems and methods for guiding cuts to a femur and tibia during a knee arthroplasty
EP1991172A1 (en) * 2005-11-14 2008-11-19 Portland Orthopaedics Pty Ltd Prosthesis assembly including angle and position adaptors
FR2896684B1 (en) 2006-02-01 2008-09-26 Tornier Soc Par Actions Simplifiee offset tibial implant rod
US8066774B2 (en) 2006-04-07 2011-11-29 Warsaw Orthopedic, Inc. Artificial disc implants and associated methods and instrumentation
US7842093B2 (en) 2006-07-18 2010-11-30 Biomet Manufacturing Corp. Method and apparatus for a knee implant
US8998990B2 (en) 2006-07-24 2015-04-07 DePuy Synthes Products, LLC Intervertebral implant with keel
CN101547656A (en) 2006-07-31 2009-09-30 辛迪思有限责任公司 Drilling/milling guide and keel cut preparation system
US7947082B2 (en) * 2006-11-09 2011-05-24 Consensus Orthopedics, Inc. System and method for joint arthroplasty
US20080228276A1 (en) * 2007-03-14 2008-09-18 Warsaw Orthopedic, Inc. Intervertebral Prosthesis, Instruments, and Methods of Implanting
JP5584115B2 (en) 2007-05-15 2014-09-03 フェル バリー エム Implantable restraint keel with an artificial knee joint surgery
US8470047B2 (en) * 2007-09-25 2013-06-25 Depuy (Ireland) Fixed-bearing knee prosthesis
US9204967B2 (en) 2007-09-28 2015-12-08 Depuy (Ireland) Fixed-bearing knee prosthesis having interchangeable components
US8632600B2 (en) 2007-09-25 2014-01-21 Depuy (Ireland) Prosthesis with modular extensions
US8715359B2 (en) 2009-10-30 2014-05-06 Depuy (Ireland) Prosthesis for cemented fixation and method for making the prosthesis
US7628818B2 (en) * 2007-09-28 2009-12-08 Depuy Products, Inc. Fixed-bearing knee prosthesis having interchangeable components
US8128703B2 (en) * 2007-09-28 2012-03-06 Depuy Products, Inc. Fixed-bearing knee prosthesis having interchangeable components
US8187335B2 (en) * 2008-06-30 2012-05-29 Depuy Products, Inc. Posterior stabilized orthopaedic knee prosthesis having controlled condylar curvature
US8828086B2 (en) * 2008-06-30 2014-09-09 Depuy (Ireland) Orthopaedic femoral component having controlled condylar curvature
US9168145B2 (en) 2008-06-30 2015-10-27 Depuy (Ireland) Posterior stabilized orthopaedic knee prosthesis having controlled condylar curvature
US8206451B2 (en) 2008-06-30 2012-06-26 Depuy Products, Inc. Posterior stabilized orthopaedic prosthesis
US9119723B2 (en) 2008-06-30 2015-09-01 Depuy (Ireland) Posterior stabilized orthopaedic prosthesis assembly
US8192498B2 (en) 2008-06-30 2012-06-05 Depuy Products, Inc. Posterior cructiate-retaining orthopaedic knee prosthesis having controlled condylar curvature
US8236061B2 (en) 2008-06-30 2012-08-07 Depuy Products, Inc. Orthopaedic knee prosthesis having controlled condylar curvature
US8187283B2 (en) * 2008-09-30 2012-05-29 Depuy Products, Inc. Reusable orthopaedic instrument having drain holes
US8425603B2 (en) 2008-12-22 2013-04-23 Synthes Usa, Llc Orthopedic implant with flexible keel
US20110087295A1 (en) * 2009-10-12 2011-04-14 University Of Utah Bone fixation systems
US8657820B2 (en) 2009-10-12 2014-02-25 Tornier, Inc. Bone plate and keel systems
US9011547B2 (en) 2010-01-21 2015-04-21 Depuy (Ireland) Knee prosthesis system
CA2788462A1 (en) * 2010-01-29 2011-08-04 Nathaniel M. Lenz Cruciate-retaining knee prosthesis
EP2502605B1 (en) 2011-03-25 2014-08-13 Zimmer GmbH Shoulder prosthesis
US9814584B2 (en) 2011-09-28 2017-11-14 Depuy Ireland Unlimited Company Fixed-bearing knee prosthesis having a locking mechanism with a concave-to-convex mating interface
US9107756B2 (en) 2012-02-06 2015-08-18 Zimmer, Inc. Tibial baseplates for special patient populations
CN104302248B (en) * 2012-03-21 2018-08-03 史密夫和内修有限公司 It has an anatomic stem tibial implant
EP2967885B1 (en) 2013-03-15 2016-12-14 Mako Surgical Corporation Knee implant

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE29757E (en) * 1971-04-21 1978-09-12 Replacements for bicondylar joints in human limbs
US4205400A (en) * 1978-12-04 1980-06-03 Zimmer Usa, Inc. Metallo-polymeric prosthesis with cavitied interconnection
US4215439A (en) * 1978-10-16 1980-08-05 Zimmer, USA Semi-restraining knee prosthesis
EP0189253A2 (en) * 1985-01-18 1986-07-30 Pfizer Hospital Products Group, Inc. Press fit knee prosthesis and instrumentation
US5137536A (en) * 1990-03-16 1992-08-11 Nariko Koshino Tibial component for artificial knee joint

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4255439A (en) * 1979-07-13 1981-03-10 Irving Cooper Means and method for aiding individuals to stop smoking

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE29757E (en) * 1971-04-21 1978-09-12 Replacements for bicondylar joints in human limbs
US4215439A (en) * 1978-10-16 1980-08-05 Zimmer, USA Semi-restraining knee prosthesis
US4205400A (en) * 1978-12-04 1980-06-03 Zimmer Usa, Inc. Metallo-polymeric prosthesis with cavitied interconnection
EP0189253A2 (en) * 1985-01-18 1986-07-30 Pfizer Hospital Products Group, Inc. Press fit knee prosthesis and instrumentation
US5137536A (en) * 1990-03-16 1992-08-11 Nariko Koshino Tibial component for artificial knee joint

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
Drawing of Intermedics Natural Knee System Device; dated 1987 (1 page).
Drawing of Johnson & Johnson Orthopaedics' P.F.C.; dated 1990 (2 pages).
Drawing of Johnson & Johnson Orthopaedics′ P.F.C.; dated 1990 (2 pages).
Drawing of knee implant (Prouty); date unknown (1 page).

Cited By (47)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6482209B1 (en) 2001-06-14 2002-11-19 Gerard A. Engh Apparatus and method for sculpting the surface of a joint
US6723102B2 (en) 2001-06-14 2004-04-20 Alexandria Research Technologies, Llc Apparatus and method for minimally invasive total joint replacement
US7896922B2 (en) 2001-06-14 2011-03-01 Alexandria Research Technologies, Llc Implants for partial knee arthroplasty
US20030144740A1 (en) * 2002-01-25 2003-07-31 Eric Kolb Centralizing cement plug with countersink
US6926741B2 (en) 2002-01-25 2005-08-09 Depuy Products, Inc. Centralizing cement plug with countersink
US7708782B2 (en) 2003-07-17 2010-05-04 Exactech, Inc. Mobile bearing knee prosthesis
US7422605B2 (en) 2003-07-17 2008-09-09 Exactech, Inc. Mobile bearing knee prosthesis
US20060195195A1 (en) * 2003-07-17 2006-08-31 Albert Burstein Mobile bearing knee prosthesis
US20080300690A1 (en) * 2003-07-17 2008-12-04 Albert Burstein Mobile bearing knee prosthesis
US8394149B2 (en) 2005-08-31 2013-03-12 Zimmer, Gmbh Method for implantation of a femoral implant
US20080221700A1 (en) * 2005-08-31 2008-09-11 Zimmer, Gmbh Implant
US20100312353A1 (en) * 2005-08-31 2010-12-09 Zimmer, Gmbh Implant
US7799087B2 (en) 2005-08-31 2010-09-21 Zimmer Gmbh Implant
US8308807B2 (en) 2005-11-09 2012-11-13 Zimmer, Gmbh Implant with differential anchoring
US20070179627A1 (en) * 2005-12-21 2007-08-02 Gustilo Ramon B Tibial component with a conversion module for a knee implant
US9241800B2 (en) 2005-12-21 2016-01-26 Orthopaedic International Inc. Tibial component with a conversion module for a knee implant
US20090048679A1 (en) * 2006-02-09 2009-02-19 Zimmer Gmbh Implant
US20090187252A1 (en) * 2006-04-28 2009-07-23 Zimmer Gmbh Implant
US8632601B2 (en) 2006-04-28 2014-01-21 Zimmer, Gmbh Implant
US8979935B2 (en) 2007-07-31 2015-03-17 Zimmer, Inc. Joint space interpositional prosthetic device with internal bearing surfaces
US20090036995A1 (en) * 2007-07-31 2009-02-05 Zimmer, Inc. Joint space interpositional prosthetic device with internal bearing surfaces
US8529631B2 (en) * 2008-07-18 2013-09-10 Zimmer, Gmbh Base component for a tibial implant
US20100016980A1 (en) * 2008-07-18 2010-01-21 Zimmer Gmbh Base component for a tibial implant
US20110082559A1 (en) * 2009-10-06 2011-04-07 Wright Medical Technology, Inc. Tibial implant base
US9566161B2 (en) 2009-10-06 2017-02-14 Microport Orthopedics Holdings Inc. Tibial implant base
US8740984B2 (en) 2009-10-06 2014-06-03 Microport Orthopedics Holdings Inc. Tibial implant base
US8814944B2 (en) 2009-10-06 2014-08-26 Microport Orthopedics Holdings Inc. Tibial implant base
WO2012018567A1 (en) * 2010-07-24 2012-02-09 Zimmer, Inc. Asymmetric tibial components for a knee prosthesis
US8574304B2 (en) 2010-07-24 2013-11-05 Zimmer, Inc. Asymmetric tibial components for a knee prosthesis
US9763794B2 (en) 2010-07-24 2017-09-19 Zimmer, Inc. Tibial prosthesis
US8764840B2 (en) 2010-07-24 2014-07-01 Zimmer, Inc. Tibial prosthesis
US8628580B2 (en) 2010-07-24 2014-01-14 Zimmer, Inc. Tibial prosthesis
US8613775B2 (en) 2010-07-24 2013-12-24 Zimmer, Inc. Asymmetric tibial components for a knee prosthesis
US9192480B2 (en) 2010-07-24 2015-11-24 Zimmer, Inc. Asymmetric tibial components for a knee prosthesis
US9861490B2 (en) 2010-07-24 2018-01-09 Zimmer, Inc. Asymmetric tibial components for a knee prosthesis
US9283082B2 (en) 2010-07-24 2016-03-15 Zimmer, Inc. Methods related to seating of bearing component on tibial tray
US9763796B2 (en) 2010-07-24 2017-09-19 Zimmer, Inc. Asymmetric tibial components for a knee prosthesis
US9918844B2 (en) 2010-07-24 2018-03-20 Zimmer, Inc. Tibial prosthesis with a fixed bearing component
US8568486B2 (en) 2010-07-24 2013-10-29 Zimmer, Inc. Asymmetric tibial components for a knee prosthesis
US9381090B2 (en) 2010-07-24 2016-07-05 Zimmer, Inc. Asymmetric tibial components for a knee prosthesis
US9295557B2 (en) 2010-07-24 2016-03-29 Zimmer, Inc. Asymmetric tibial components for a knee prosthesis
US9763795B2 (en) 2010-09-10 2017-09-19 Zimmer, Inc. Motion facilitating tibial components for a knee prosthesis
US8591594B2 (en) 2010-09-10 2013-11-26 Zimmer, Inc. Motion facilitating tibial components for a knee prosthesis
US9314343B2 (en) 2010-09-10 2016-04-19 Zimmer, Inc. Motion facilitating tibial components for a knee prosthesis
US9308096B2 (en) 2011-11-21 2016-04-12 Zimmer, Inc. Tibial baseplate with asymmetric placement of fixation structures
US9707089B2 (en) 2011-11-21 2017-07-18 Zimmer, Inc. Tibial baseplate with asymmetric placement of fixation structures
US8758444B2 (en) 2011-11-21 2014-06-24 Zimmer, Inc. Tibial baseplate with asymmetric placement of fixation structures

Also Published As

Publication number Publication date Type
US5271737A (en) 1993-12-21 grant

Similar Documents

Publication Publication Date Title
US5201768A (en) Prosthesis for implant on the tibial plateau of the knee
EP0546726B1 (en) Prosthetic knee joint
US6206926B1 (en) Prosthetic knee joint with enhanced posterior stabilization and dislocation prevention features
US7749276B2 (en) Bone protector, kit and method
US7105026B2 (en) Modular knee prosthesis
US5147405A (en) Knee prosthesis
US4079469A (en) Elbow joint endoprosthesis
US4944757A (en) Modulator knee prosthesis system
US5658342A (en) Stabilized prosthetic knee
US5782921A (en) Modular knee prosthesis
US6010534A (en) Rotatable tibial prosthesis with keyed axial securement
US6074424A (en) Implantable knee joint prosthesis convertible from primary to revision
US4963152A (en) Asymmetric prosthetic tibial component
US7060101B2 (en) Tibial component
US20040153087A1 (en) Provisional orthopedic implant with removable guide
US20050021147A1 (en) Physiological total knee implant
US20070173858A1 (en) Apparatus and Method for Sculpting the Surface of a Joint
US6364911B1 (en) Femoral sled prosthesis
US4340978A (en) New Jersey meniscal bearing knee replacement
EP0336774B1 (en) Modular knee joint prosthesis
US20040044414A1 (en) Knee joint endoprosthesis system
US20080183219A1 (en) Anti-backout arthroscopic uni-compartmental prosthesis
US4207627A (en) Knee prosthesis
US20100100190A1 (en) Tibial tray having a reinforcing member
EP0732091B1 (en) Mobile bearing total joint replacement

Legal Events

Date Code Title Description
AS Assignment

Owner name: HAYES MEDICAL, INC., CALIFORNIA

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:U.S. MEDICAL PRODUCTS;REEL/FRAME:008773/0438

Effective date: 19970806

AS Assignment

Owner name: WRIGHT MEDICAL TECHNOLOGY, INC., TENNESSEE

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:HAYES MEDICAL, INC.;REEL/FRAME:012884/0389

Effective date: 20020423

FPAY Fee payment

Year of fee payment: 12

AS Assignment

Owner name: CROSSROADS DEBT LLC, FLORIDA

Free format text: SECURITY AGREEMENT;ASSIGNOR:CONSENSUS ORTHOPEDICS, INC.;REEL/FRAME:022510/0781

Effective date: 20090219