GB2278782A - An improved knee arthroplasty and tibial component therefor - Google Patents

An improved knee arthroplasty and tibial component therefor Download PDF

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Publication number
GB2278782A
GB2278782A GB9308076A GB9308076A GB2278782A GB 2278782 A GB2278782 A GB 2278782A GB 9308076 A GB9308076 A GB 9308076A GB 9308076 A GB9308076 A GB 9308076A GB 2278782 A GB2278782 A GB 2278782A
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United Kingdom
Prior art keywords
knee arthroplasty
tibial component
component
femoral
basal portion
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Withdrawn
Application number
GB9308076A
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GB9308076D0 (en
Inventor
Kevin Hardinge
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Individual
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Individual
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Publication date
Application filed by Individual filed Critical Individual
Priority to GB9308076A priority Critical patent/GB2278782A/en
Publication of GB9308076D0 publication Critical patent/GB9308076D0/en
Publication of GB2278782A publication Critical patent/GB2278782A/en
Withdrawn legal-status Critical Current

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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
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30108—Shapes
    • A61F2002/3011—Cross-sections or two-dimensional shapes
    • A61F2002/30112—Rounded shapes, e.g. with rounded corners
    • A61F2002/30125—Rounded shapes, e.g. with rounded corners elliptical or oval
    • 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
    • A61F2002/30108—Shapes
    • A61F2002/3011—Cross-sections or two-dimensional shapes
    • A61F2002/30159—Concave polygonal shapes
    • A61F2002/30164—Concave polygonal shapes dovetail-shaped
    • 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
    • A61F2002/3039—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 with possibility of relative movement of the rib within the groove
    • A61F2002/30398—Sliding
    • 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
    • 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
    • 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
    • A61F2230/00—Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2230/0002—Two-dimensional shapes, e.g. cross-sections
    • A61F2230/0004—Rounded shapes, e.g. with rounded corners
    • A61F2230/0008—Rounded shapes, e.g. with rounded corners elliptical or oval
    • 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
    • A61F2230/00—Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2230/0002—Two-dimensional shapes, e.g. cross-sections
    • A61F2230/0028—Shapes in the form of latin or greek characters

Landscapes

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

Abstract

The tibial component comprises a lower basal portion 2 for attachment to the tibia and upper meniscii 12, 14, the latter being adapted on the lower surface thereof to cooperate with tracks 4, 6 on the upper surface of the basal portion and adapted on the upper surface thereof to accommodate a femoral component or femoral condyles. The medial and lateral tracks are asymmetrical with respect to each other and a meniscus is able to move freely along a path defined by its cooperating track. A total knee arthroplasty comprising a femoral component and a tibia component is also provided. The media track of the lower basal portion maybe straight and the lateral track may be curved or vice versa so long as the asymmetric design is provided. <IMAGE>

Description

AN IMPROVED KNEE ARTHROPLASTY Background The present invention relates to a knee arthroplasty and to components thereof.
A total knee arthroplasty usually consists of a femoral component and an accommodating tibial component. The femoral component is usually made of metal or a metallic substance and the tibial component consists of High Density Polyethylene placed on a metal tray attached to the upper end of the tibia.
Movement and flexion in the knee arthroplasty originally took place by the upper femoral surface sliding over the lower tibial surface and in order for the sliding to be effective the interface was not completely congruous. However, due to the incongruity at the interface and the resulting high pressure point contact between the upper metallic and lower polyethylene portions, fatigue failure of the High Density Polyethylene is common.
There have been some attempts to overcome these problems.
Notably, greater congruity at the femoral/tibial interface reduces point pressure by spreading the contact area.
Unfortunately, the greater congruity of design has been found to give reduced mobility compared with the less congruous sliding designs.
One solution to this problem has been to produce a congruous design with independently slideable tibial meniscii thus allowing a congruous interface with greater movement.
Two meniscii have been preferred and these are accommodated in two tracks on the upper surface of a basal portion of the tibial member. The two aligned symmetrical tracks extend in an anterior/posterior direction and are either both curved or both straight. Unfortunately, the natural movements of the knee are asymmetrical and problems have been encountered as meniscii, through repeated cyclical movements of the knee joint, are displaced.
In particular, it has been observed that the asymmetry of the knee is manifest in a concave upper medial tibial portion and a convex upper lateral tibial portion.
It is an object of the present invention to provide an improvement in the knee arthroplasty so that the movementthereof more closely mimics that of normal knee and in so doing overcomes the difficulties encountered with existing designs.
According to the present invention, there is provided a knee arthroplasty tibial component comprising a lower basal portion for attachment to the tibia and upper meniscal portions, the said meniscii being adapted on the lower surface thereof to cooperate with tracks on the upper side of the basal portion and adapted on the upper surface thereof to accommodate a femoral component or femoral condyles wherein the medial and lateral tracks are asymmetrical with respect to each other and a meniscus is able to move freely along a path defined by its cooperating track.
According to a second aspect of the present invention there is provided a total knee arthroplasty comprising a femoral component and a tibial component, the said tibial component consisting of a lower basal portion for attachment to the upper end of the tibia, and upper meniscii for accommodating the femoral component, the said meniscii being adapted on the lower surface thereof,to cooperate with tracks on the upper side of the basal portion wherein the said tracks are asymmetrical with respect to each other and a given meniscus is able to move freely along a path defined by its cooperating track.
Typically, the lower basal portion is attached to the upper end of the tibia by an interference fit, although the basal portion can be affixed by non-interference grouting with an appropriate cement. Typically, the basal portion has one interference stem but it may have two or more extending therefrom depending on the stability required.
Preferably, the femoral component is substantially convex and shaped so as to imitate the femoral condyles. Preferably the upper surface of the meniscii are substantially concave and shaped so as to mimic the upper surface of the tibia and also accommodate the femoral component.
Typically, the upper meniscal surfaces are adapted to be congruous with and to stabilise the convex femoral component.
Preferably, the medial track of the lower basal portion is straight and the lateral track is curved. However, it will be appreciated that a reverse configuration will also provide the asymmetric design required.
Typically, stops are provided at the anterior and posterior extremes of a track to prevent a meniscus from sliding out of place.
The femoral component can be attached to the femur by interference fit or by non-interference grouting.
Typically, the femoral and lower basal tibial component consist of steel or other suitable metallic substance and the tibial meniscii are of High Density Polyethylene.
The rotational forces on the knee arthroplasty cause the meniscii to move in their respective tracks thus providing a lower resistance to rotational forces and this in turn causes a reduction in the shear stresses at the bone/prosthesis interface.
The congruency in the medial lateral axis may be reduced to give lower rotational resistance during flexion and lower shear stress at the bone/prosthesis interface.
The invention will now be described by way of example with reference to the single figure of the accompanying drawing which shows an exploded perspective view of an unassembled version of the tibial component.
Referring to the figure, a lower basal portion of a tibial component 2 consisting of a substantially elliptical base plate with medial and lateral tracks 4 and 6 of dovetail cross-section in the upper surface thereof extending in an anterior-posterior direction and spaced from each other by a posteriorly sloping bridge 8. The medial track 6 is straight and the lateral track 8 is curved. An interference stem 10 extends below the basal plate and is designed to be inserted into a prepared tibia from above.
Meniscii 12 and 14 have lower surfaces designed to fit and slide in respective tracks 4 and 6, the lower surface of the medial meniscus 12 corresponding to the straight track 6 and the lower surface of the lateral meniscus 14 corresponding to the curved track 4.
The upper surface of the meniscus 12 is shaped to be congruent with the lower medial femoral portion of a knee arthroplasty and the upper surface of the meniscus 14 is shaped to be congruent with the lower lateral femoral portion of a knee arthroplasty.
It will be appreciated that the above embodiment has been described by way of example only and that many variations are possible without departing from the scope of the invention.

Claims (15)

1. A knee arthroplasty tibial component comprising a lower basal portion for attachment to the tibia and upper meniscal portions, the said meniscii being adapted on the lower surface thereof to cooperate with tracks on the upper surface of the basal portion and adapted on the upper surface thereof to accommodate a femoral component or femoral condyles wherein the medial and lateral tracks are asymmetrical with respect to each other and a meniscus is able to move freely along a path defined by its cooperating track.
2. A total knee arthroplasty comprising a femoral component and a tibial component, the said tibial component consisting of a lower basal portion for attachment to the upper end of the tibia, and upper meniscii for accommodating the femoral component, the said meniscii being adapted on the lower surface thereof, to cooperate with tracks on the upper surface of the basal portion wherein the said tracks are asymmetrical with respect to each other and a given meniscus is able to move freely along a path defined by its cooperating track.
3. A knee arthroplasty tibial component or a total knee arthroplasty of claims 1 or 2 wherein the lower basal portion is attached to the upper end of the tibia by an interference fit.
4. A knee arthroplasty tibial component or a total knee arthroplasty of claims 1,2 or 3 wherein the basal portion can be affixed by non-interference grouting with an appropriate cement.
5. A knee arthroplasty tibial component or a total knee arthroplasty as claimed in claims 1,2 or 3, wherein the basal portion has one interference stem.
6. A knee arthroplasty tibial component or a total knee arthroplasty as claimed in claims 1,2,3 or 5 wherein the basal portion has two or more interference stems.
7. A total knee arthroplasty as claimed in claims 2 to 6 wherein the femoral component is substantially convex and shaped so as to mimic the femoral condyles.
8. A knee arthroplasty tibial component or a total knee arthroplasty as claimed in any of the preceding claims wherein the upper surface of the meniscii are substantially concave and shaped so as to mimic the upper surface of the tibia and also accommodate the femoral component or femoral condyles.
9. A knee arthroplasty tibial component or a total knee arthroplasty as claimed in any preceding claim wherein the upper meniscii surfaces are adapted to be congruous with and to stabilise the convex femoral component or femoral condyles.
10. A knee arthroplasty tibial component or a total knee arthroplasty as claimed in any preceding claim wherein the medial track of the lower basal portion is straight and the lateral track is curved.
11. A knee arthroplasty tibial component or a total knee arthroplasty as claimed in any preceding claim wherein the medial track of the lower basal portion is curved and the lateral track is straight.
12. A knee arthroplasty tibial component or a total knee arthroplasty as claimed in any preceding claim wherein stops are provided at the anterior and posterior extremes of each track to prevent a meniscus from sliding out of place.
13. A knee arthroplasty as claimed in any of claims 2 to 12 wherein the femoral component can be attached to the femur by interference fit or by non-interference grouting.
14. A knee arthroplasty tibial component as claimed in any of claims 1 or3 to 13 wherein the lower basal tibial component consists of steel or other suitable substance and the tibial meniscii are of High Density Polyethylene.
15. A total knee arthroplasty as claimed in any of claims 2 to 14 wherein the femoral and lower basal tibial components consist of steel or other suitable substance and the tibial meniscii of High Density Polyethylene.
GB9308076A 1993-04-20 1993-04-20 An improved knee arthroplasty and tibial component therefor Withdrawn GB2278782A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9308076A GB2278782A (en) 1993-04-20 1993-04-20 An improved knee arthroplasty and tibial component therefor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9308076A GB2278782A (en) 1993-04-20 1993-04-20 An improved knee arthroplasty and tibial component therefor

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GB9308076D0 GB9308076D0 (en) 1993-06-02
GB2278782A true GB2278782A (en) 1994-12-14

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Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2778332A1 (en) * 1998-05-07 1999-11-12 Jacques Philippe Laboureau Surgical knee joint prosthesis
US6210444B1 (en) 1999-10-26 2001-04-03 Bristol-Myers Squibb Company Tibial knee component with a mobile bearing
US6210445B1 (en) 1999-10-26 2001-04-03 Bristol-Myers Squibb Company Tibial knee component with a mobile bearing
US6217618B1 (en) 1999-10-26 2001-04-17 Bristol-Myers Squibb Company Tibial knee component with a mobile bearing
US6319283B1 (en) 1999-07-02 2001-11-20 Bristol-Myers Squibb Company Tibial knee component with a mobile bearing
US6558427B2 (en) 2000-05-29 2003-05-06 Sulzer Orthopedics Ltd. Knee implant
US6911044B2 (en) * 1999-05-10 2005-06-28 Barry M. Fell Surgically implantable knee prosthesis having medially shifted tibial surface
US7297161B2 (en) 1999-05-10 2007-11-20 Fell Barry M Surgically implantable knee prosthesis
WO2006118822A3 (en) * 2005-04-29 2007-11-29 Barry M Fell Surgically implantable prosthetic system
US7338524B2 (en) 1999-05-10 2008-03-04 Fell Barry M Surgically implantable knee prosthesis
JP2008518647A (en) * 2004-11-03 2008-06-05 ノヴァコヴスキ アンドレイ Lateral support tibial plateau (TTTP)
US7491235B2 (en) 1999-05-10 2009-02-17 Fell Barry M Surgically implantable knee prosthesis
DE102011009616A1 (en) * 2011-01-28 2012-08-02 Speetec Implantate Gmbh Knee prosthesis for use as artificial joint for restoring normal kinematic movement, has movable sliding core arranged on medial sliding surface and moved along guide rail in carrier plateau in anterior-posterior direction
CN106264801A (en) * 2016-08-03 2017-01-04 嘉思特华剑医疗器材(天津)有限公司 Anatomical form asymmetric Double tabletop knee-joint prosthesis

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2061730A (en) * 1979-10-26 1981-05-20 Polyzoides A J Endoprosthetic bone joint devices
EP0519872A1 (en) * 1991-06-17 1992-12-23 André Bähler Joint prosthesis, in particular a knee prosthesis
EP0519873B1 (en) * 1991-06-17 1996-12-27 André Bähler Joint prosthesis, particularly for the knee

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2061730A (en) * 1979-10-26 1981-05-20 Polyzoides A J Endoprosthetic bone joint devices
EP0519872A1 (en) * 1991-06-17 1992-12-23 André Bähler Joint prosthesis, in particular a knee prosthesis
EP0519873B1 (en) * 1991-06-17 1996-12-27 André Bähler Joint prosthesis, particularly for the knee

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2778332A1 (en) * 1998-05-07 1999-11-12 Jacques Philippe Laboureau Surgical knee joint prosthesis
US7491235B2 (en) 1999-05-10 2009-02-17 Fell Barry M Surgically implantable knee prosthesis
US7338524B2 (en) 1999-05-10 2008-03-04 Fell Barry M Surgically implantable knee prosthesis
US7297161B2 (en) 1999-05-10 2007-11-20 Fell Barry M Surgically implantable knee prosthesis
US6911044B2 (en) * 1999-05-10 2005-06-28 Barry M. Fell Surgically implantable knee prosthesis having medially shifted tibial surface
US6319283B1 (en) 1999-07-02 2001-11-20 Bristol-Myers Squibb Company Tibial knee component with a mobile bearing
US6217618B1 (en) 1999-10-26 2001-04-17 Bristol-Myers Squibb Company Tibial knee component with a mobile bearing
US6210444B1 (en) 1999-10-26 2001-04-03 Bristol-Myers Squibb Company Tibial knee component with a mobile bearing
US6210445B1 (en) 1999-10-26 2001-04-03 Bristol-Myers Squibb Company Tibial knee component with a mobile bearing
US6558427B2 (en) 2000-05-29 2003-05-06 Sulzer Orthopedics Ltd. Knee implant
EP1159938B1 (en) * 2000-05-29 2003-10-29 Centerpulse Orthopedics Ltd. Knee prosthesis
US7641689B2 (en) 2004-04-22 2010-01-05 Fell Barry M Surgically implantable knee prosthesis
US7819919B2 (en) 2004-04-26 2010-10-26 Fell Barry M Surgically implantable knee prosthesis
JP2008518647A (en) * 2004-11-03 2008-06-05 ノヴァコヴスキ アンドレイ Lateral support tibial plateau (TTTP)
WO2006118822A3 (en) * 2005-04-29 2007-11-29 Barry M Fell Surgically implantable prosthetic system
DE102011009616A1 (en) * 2011-01-28 2012-08-02 Speetec Implantate Gmbh Knee prosthesis for use as artificial joint for restoring normal kinematic movement, has movable sliding core arranged on medial sliding surface and moved along guide rail in carrier plateau in anterior-posterior direction
DE102011009616B4 (en) * 2011-01-28 2015-06-18 Speetec Implantate Gmbh knee prosthesis
CN106264801A (en) * 2016-08-03 2017-01-04 嘉思特华剑医疗器材(天津)有限公司 Anatomical form asymmetric Double tabletop knee-joint prosthesis

Also Published As

Publication number Publication date
GB9308076D0 (en) 1993-06-02

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