US20010018615A1 - Knee protsthetic with cavity implemented in the trochlea - Google Patents
Knee protsthetic with cavity implemented in the trochlea Download PDFInfo
- Publication number
- US20010018615A1 US20010018615A1 US09/781,792 US78179201A US2001018615A1 US 20010018615 A1 US20010018615 A1 US 20010018615A1 US 78179201 A US78179201 A US 78179201A US 2001018615 A1 US2001018615 A1 US 2001018615A1
- Authority
- US
- United States
- Prior art keywords
- trochlea
- knee
- cavity
- meniscus
- condyles
- 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.)
- Granted
Links
Images
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
Definitions
- the invention relates to a complete knee prosthetic, the type of which includes a tibia part comprising a support plate which is horizontal and fastened by means of appropriate anchoring means to the tibia which has been re-sectioned. It also includes a meniscus, which is generally in a plastic material and is put down on the tibia plate so as to be fastened or removable, and a femoral part which includes one or two condyles on the one side and a trochlea part on the other side.
- the present invention also relates to a femoral part of such a prosthetic.
- the external surface of the one or many condyles of the femoral part is generally spherical.
- the shape of the condyles is an arc, the angle of which extends over the normal flexing range of a knee, i.e. zero to one hundred and twenty or one hundred and thirty degrees.
- the spherical surface of the condyle co-operates with the corresponding upper surface of the meniscus, which has a shape that is complementary to the spherical shape of the condyles, by means of a sliding action.
- a prosthetic of this type is known, for instance from international patent application WO92/03108 of British Technology Group.
- the disadvantage of this type of prosthetic according to the prior art is that it is preferable to implement this prosthetic with conserving the posterior crossed ligament (PCL).
- PCL posterior crossed ligament
- the femoral part can slide beyond zero degrees, i.e. beyond the vertical position defined by the tibia and the femur being parallel and thus into the range of negative angles of rotation. Said negative angles correspond to the fact that the tibia abnormally closes in on the femur from the front of the leg, as opposed to normally closing in on the femur from the back of the leg when one flexes the knees. This situation may eventually result in the dislocation of the meniscus or the femoral part, in the case of an implementation without conserving the posterior crossed ligament.
- a complete prosthetic of this type is also known from European Patent 0 653 927 in the name of Walker, granted from PCT application WO94/26212.
- a cavity is implemented in the condyle to enable a perfect congruence when a flexing angle is null (knee extended). It is also preferable for this prosthetic to be implemented with conserving the posterior crossed ligament, for the same reasons as previously explained.
- the above disadvantages are overcome by providing a complete knee prosthetic which can be implemented either with or without the posterior crossed ligament, and notably without the posterior crossed ligament, without said negative angles of rotation being permitted to reach values beyond minus five or minus ten degrees.
- a complete prosthetic of the knee according to the invention includes a femoral part and a meniscus, with said femoral part comprising at least one condyle and a trochlea part, wherein said one or a plurality of condyles each have an external surface, the shape of which complements the respective upper surface of said meniscus in order to obtain a congruence of said surfaces on at least part of the normal flexing range.
- At least one cavity and the relative emplacements are implemented in said trochlea part, the dimensions and shapes of said at least one cavity and the anterior upper edge of said meniscus being such that the femoral part is blocked in its flexion by rotation in the case of negative angles beyond an inferior negative angle limit.
- a cavity is implemented in the trochlea part of the femoral part, which can rest on the anterior side against part of the upper edge of the meniscus according to a flexing angle of for instance of minus five degrees.
- the femoral part thus comes to rest against the abutment which is the meniscus by means of the cavity implemented in the trochlea and therefore cannot follow its rotation through to negative angles. Consequently, the complete knee prosthetic cannot flex in the wrong direction even though the posterior crossed ligament is not present.
- it is indeed said posterior crossed ligament which prevents this rotation into negative angles. According to the invention, even if the posterior crossed ligament is not present anymore, this rotation into negative angles is prevented.
- the value of said inferior negative angle limit is comprised between zero and minus ten degrees, preferably equal to minus five degrees.
- said upper edge includes at least one shaped projection, in a sagittal perspective, complementary with said one or more of cavities such that said one or more projections come to rest against said one or more cavities.
- said one or more projections have a height superior to the height of the posterior upper edges, relative to the flat base of the meniscus.
- said one or more condyles are spherical in shape.
- said condyles comprise two circular segments in a sagittal perspective, with the first of said segments being an intermediary circular segment with a greater radius and the second of said segments being an extremity circular segment with a smaller radius.
- the cavity is implemented in the trochlea part at the level corresponding to an angle of ten to thirty degrees along the circular segment corresponding to the projection of the trochlea part in a sagittal perspective, from the end of said condyles.
- FIG. 1 is a cross-section of a knee prosthetic according to the invention corresponding to a knee in the extended position, i.e. with a flexing angle equal to zero degrees;
- FIG. 2 is a cross-section of the same knee prosthetic as shown in FIG. 1 corresponding to a knee flexed according to the maximum negative flexing angle of minus five degrees;
- FIG. 3 is a cross-section of the same knee prosthetic as shown in FIG. 1 corresponding to a knee flexed according to a flexing angle of sixty degrees;
- FIG. 4 is a cross-section in a sagittal perspective of the femoral part of the complete knee prosthetic according to the invention.
- FIG. 5 is a perspective view of a tibia insert or meniscus of a complete knee prosthetic according to the invention.
- FIG. 6 is a cross-section in perspective of a knee prosthetic according to the invention.
- FIG. 7 is another perspective view of the prosthetic shown in FIG. 6.
- the flexing angle is the angle between the axis of the pin 11 and the axis 3 of the anchoring of the tibia part. In FIG. 1, this flexing angle is null. In the case of an anticlockwise rotation of the femur, relative to the tibia which is steady, the flexing angle is positive. For instance, in FIG. 3, the value of this angle is sixty degrees. In the case of a clockwise rotation of the femur, relative to the tibia which is steady, the flexing angle is negative. For instance the value of this angle is minus five degrees in FIG. 2.
- a complete knee prosthetic the position of which corresponds to an extended knee, is shown in FIG. 1.
- Said complete knee prosthetic includes a tibia part 1 comprising a tibia plate 2 , stemmed from an anchoring axis 3 , the purpose of which is to anchor itself in the tibia bone.
- An tibia insert 3 or meniscus in polyethylene material is resting on the tibia plate 2 .
- Said tibia insert 3 co-operates with said tibia plate 2 by means of a tenon 4 , fixated to said tibia plate 2 and a cavity 5 implemented in said tibia insert.
- the tibia insert can thus pivot relative to the axis of tenon 4 and perform medio-lateral and antero-posterior translatory movements within a set range of movements.
- Co-pending French applications Nos. 99 01 158 dated Feb. 2, 1999 and 99 08 632 dated Jul. 5, 1999 of the present assignee may be usefully consulted for reference to a more detailed description of this part of the complete knee prosthetic, which is not part of the present invention.
- the complete knee prosthetic also includes a femoral part 6 .
- Said femoral part 6 includes two spherical condyles 7 and 8 separated by an inter-condyle clear interval, and a trochlea part 20 .
- condyles 7 and 8 In a sagittal perspective, i.e. a perspective both parallel to the axis of the tibia and parallel to the axis of the femur when the knee is bent, condyles 7 and 8 have a circular shape.
- Said circular shape comprises two circular segments side-by-side, a principal circular segment 9 and an extremity circular segment 10 .
- Said extremity circular segment 10 extends over an angle of thirty to forty degrees whereas said principal circular segment 9 extends over an angle of eighty to ninety degrees.
- the radius of the secondary circle 10 is smaller than the radius of the principal circle 9 .
- the radius of the principal circle 9 equals 1,25 times the radius of the secondary circle 10 .
- Two pins 11 (only one of which is shown in FIG. 6) ensure the femoral part is anchored in the femur bone. Said pin 11 defines the zero degree angle, which corresponds to the knee in the extended position, when it is parallel to tibia I as shown in FIG. 1.
- said condyles each co-operate with an upper surface 12 of the insert 3 .
- said surfaces 12 also have a circular shape, with said shape complementing the spherical shape of condyles 7 and 8 , and their radius is equal to the radius of the principal circle 9 .
- a perfect congruence is thus obtained up to a flexing angle of circa eighty degrees.
- a trochlean trajectory 13 is defined therein, the shape of which is a canal, as can be better observed in FIG. 7. In a sagittal perspective, the shape of this trochlean trajectory 13 is also a circle, notably with a greater radius than the radius of the principal circle 9 .
- Two cavities 14 , 15 are implemented in the external surface of the trochlea part 20 .
- Said cavities 14 , 15 are for instance implemented by a cutting process.
- the tibia insert 3 or meniscus includes two posterior edges 16 , 17 , each of which demarcates one of the spherical upper surfaces 12 of said insert 3 on the posterior side.
- the tibia insert 3 is demarcated by an edge 18 on the anterior side.
- Said edge 18 includes two projections 19 which have a height greater than the height of posterior edges 16 and 17 , relative to the perspective defined by the flat base 21 of tibia insert 3 .
- said projections 19 are circularly curved and have a shape which complements the shapes of cavities 14 , 15 such that, in the case of a flexion of the knee according to a set negative angle, i.e.
- cavities 14 , 15 can be any or other shape, so long as said shape is complementary with the shape of projections 19 in a sagittal perspective of insert 3 , such that cavities 14 , 15 come to rest against projections 19 .
- the complete knee prosthetic shown in FIG. 2 is represented in the position depicting a flexion blocked to negative angles, as the angle between the tibia and the femur is equal to minus five degrees.
- FIG. 4 A cross-section of the femoral part in a sagittal perspective is shown in FIG. 4. Circles 9 and 10 corresponding to condyles 7 , 8 extend over a total angle of one hundred and thirty degrees and notably one hundred and twenty degrees from pin 11 , in the positive trigonometric direction. Said angle corresponds to the range of normal flexion, with the condyles sliding over the meniscus as the femur flexes relative to the tibia.
- Cavity 14 is implemented in the trochlea from the end of the condyles (OP axis), at a level corresponding to an angle of ten to thirty degrees along the circle corresponding to the projection of the trochlea part in the sagittal perspective.
- the height of the projections of edge 18 is such that the flexing angle is equal to minus five degrees when said projections rests against the cavity.
Abstract
Description
- 1. Field of the Invention
- The invention relates to a complete knee prosthetic, the type of which includes a tibia part comprising a support plate which is horizontal and fastened by means of appropriate anchoring means to the tibia which has been re-sectioned. It also includes a meniscus, which is generally in a plastic material and is put down on the tibia plate so as to be fastened or removable, and a femoral part which includes one or two condyles on the one side and a trochlea part on the other side. The present invention also relates to a femoral part of such a prosthetic.
- 2. Description of the Related Art
- The external surface of the one or many condyles of the femoral part is generally spherical. When observed from a sagittal perspective, i.e. a perspective parallel to the axis of the tibia and/or to the axis of the femur when the knee is bent and thus also parallel to the pre-posterior axis, the shape of the condyles is an arc, the angle of which extends over the normal flexing range of a knee, i.e. zero to one hundred and twenty or one hundred and thirty degrees. The spherical surface of the condyle co-operates with the corresponding upper surface of the meniscus, which has a shape that is complementary to the spherical shape of the condyles, by means of a sliding action.
- A prosthetic of this type is known, for instance from international patent application WO92/03108 of British Technology Group. The disadvantage of this type of prosthetic according to the prior art is that it is preferable to implement this prosthetic with conserving the posterior crossed ligament (PCL). In complete knee prosthetics according to the prior art, the femoral part can slide beyond zero degrees, i.e. beyond the vertical position defined by the tibia and the femur being parallel and thus into the range of negative angles of rotation. Said negative angles correspond to the fact that the tibia abnormally closes in on the femur from the front of the leg, as opposed to normally closing in on the femur from the back of the leg when one flexes the knees. This situation may eventually result in the dislocation of the meniscus or the femoral part, in the case of an implementation without conserving the posterior crossed ligament.
- A complete prosthetic of this type is also known from European Patent 0 653 927 in the name of Walker, granted from PCT application WO94/26212. A cavity is implemented in the condyle to enable a perfect congruence when a flexing angle is null (knee extended). It is also preferable for this prosthetic to be implemented with conserving the posterior crossed ligament, for the same reasons as previously explained.
- According to the invention, the above disadvantages are overcome by providing a complete knee prosthetic which can be implemented either with or without the posterior crossed ligament, and notably without the posterior crossed ligament, without said negative angles of rotation being permitted to reach values beyond minus five or minus ten degrees.
- A complete prosthetic of the knee according to the invention includes a femoral part and a meniscus, with said femoral part comprising at least one condyle and a trochlea part, wherein said one or a plurality of condyles each have an external surface, the shape of which complements the respective upper surface of said meniscus in order to obtain a congruence of said surfaces on at least part of the normal flexing range. At least one cavity and the relative emplacements are implemented in said trochlea part, the dimensions and shapes of said at least one cavity and the anterior upper edge of said meniscus being such that the femoral part is blocked in its flexion by rotation in the case of negative angles beyond an inferior negative angle limit.
- A cavity is implemented in the trochlea part of the femoral part, which can rest on the anterior side against part of the upper edge of the meniscus according to a flexing angle of for instance of minus five degrees. The femoral part thus comes to rest against the abutment which is the meniscus by means of the cavity implemented in the trochlea and therefore cannot follow its rotation through to negative angles. Consequently, the complete knee prosthetic cannot flex in the wrong direction even though the posterior crossed ligament is not present. According to the prior art, it is indeed said posterior crossed ligament which prevents this rotation into negative angles. According to the invention, even if the posterior crossed ligament is not present anymore, this rotation into negative angles is prevented.
- According to a preferred embodiment of the present invention, the value of said inferior negative angle limit is comprised between zero and minus ten degrees, preferably equal to minus five degrees.
- According to a preferred embodiment of the present invention, said upper edge includes at least one shaped projection, in a sagittal perspective, complementary with said one or more of cavities such that said one or more projections come to rest against said one or more cavities.
- According to a preferred embodiment of the present invention, said one or more projections have a height superior to the height of the posterior upper edges, relative to the flat base of the meniscus.
- According to a preferred embodiment of the present invention, said one or more condyles are spherical in shape.
- According to a preferred embodiment of the present invention, said condyles comprise two circular segments in a sagittal perspective, with the first of said segments being an intermediary circular segment with a greater radius and the second of said segments being an extremity circular segment with a smaller radius.
- According to a preferred embodiment of the present invention, the cavity is implemented in the trochlea part at the level corresponding to an angle of ten to thirty degrees along the circular segment corresponding to the projection of the trochlea part in a sagittal perspective, from the end of said condyles.
- FIG. 1 is a cross-section of a knee prosthetic according to the invention corresponding to a knee in the extended position, i.e. with a flexing angle equal to zero degrees;
- FIG. 2 is a cross-section of the same knee prosthetic as shown in FIG. 1 corresponding to a knee flexed according to the maximum negative flexing angle of minus five degrees;
- FIG. 3 is a cross-section of the same knee prosthetic as shown in FIG. 1 corresponding to a knee flexed according to a flexing angle of sixty degrees;
- FIG. 4 is a cross-section in a sagittal perspective of the femoral part of the complete knee prosthetic according to the invention;
- FIG. 5 is a perspective view of a tibia insert or meniscus of a complete knee prosthetic according to the invention;
- FIG. 6 is a cross-section in perspective of a knee prosthetic according to the invention; and
- FIG. 7 is another perspective view of the prosthetic shown in FIG. 6.
- The invention will now be described by way of example only with reference to the previously identified drawings.
- In FIG. 1, the flexing angle is the angle between the axis of the
pin 11 and theaxis 3 of the anchoring of the tibia part. In FIG. 1, this flexing angle is null. In the case of an anticlockwise rotation of the femur, relative to the tibia which is steady, the flexing angle is positive. For instance, in FIG. 3, the value of this angle is sixty degrees. In the case of a clockwise rotation of the femur, relative to the tibia which is steady, the flexing angle is negative. For instance the value of this angle is minus five degrees in FIG. 2. - A complete knee prosthetic, the position of which corresponds to an extended knee, is shown in FIG. 1. Said complete knee prosthetic includes a tibia part1 comprising a
tibia plate 2, stemmed from ananchoring axis 3, the purpose of which is to anchor itself in the tibia bone. An tibia insert 3 or meniscus in polyethylene material is resting on thetibia plate 2. Said tibia insert 3 co-operates with saidtibia plate 2 by means of atenon 4, fixated to saidtibia plate 2 and acavity 5 implemented in said tibia insert. The tibia insert can thus pivot relative to the axis oftenon 4 and perform medio-lateral and antero-posterior translatory movements within a set range of movements. Co-pending French applications Nos. 99 01 158 dated Feb. 2, 1999 and 99 08 632 dated Jul. 5, 1999 of the present assignee, may be usefully consulted for reference to a more detailed description of this part of the complete knee prosthetic, which is not part of the present invention. The complete knee prosthetic also includes afemoral part 6. - Said
femoral part 6 includes two spherical condyles 7 and 8 separated by an inter-condyle clear interval, and atrochlea part 20. In a sagittal perspective, i.e. a perspective both parallel to the axis of the tibia and parallel to the axis of the femur when the knee is bent, condyles 7 and 8 have a circular shape. Said circular shape comprises two circular segments side-by-side, a principalcircular segment 9 and an extremitycircular segment 10. Said extremitycircular segment 10 extends over an angle of thirty to forty degrees whereas said principalcircular segment 9 extends over an angle of eighty to ninety degrees. The radius of thesecondary circle 10 is smaller than the radius of theprincipal circle 9. The radius of theprincipal circle 9 equals 1,25 times the radius of thesecondary circle 10. - Two pins11 (only one of which is shown in FIG. 6) ensure the femoral part is anchored in the femur bone. Said
pin 11 defines the zero degree angle, which corresponds to the knee in the extended position, when it is parallel to tibia I as shown in FIG. 1. - Within the range of normal flexion of the knee, i.e. from zero degrees to one hundred and twenty or one hundred and thirty degrees, said condyles each co-operate with an
upper surface 12 of theinsert 3. In a sagittal perspective, said surfaces 12 also have a circular shape, with said shape complementing the spherical shape of condyles 7 and 8, and their radius is equal to the radius of theprincipal circle 9. A perfect congruence is thus obtained up to a flexing angle of circa eighty degrees. - The external resting surface of the
trochlea part 20 extends beyond the condyles and the inter-condyle interval. Atrochlean trajectory 13 is defined therein, the shape of which is a canal, as can be better observed in FIG. 7. In a sagittal perspective, the shape of thistrochlean trajectory 13 is also a circle, notably with a greater radius than the radius of theprincipal circle 9. - Two
cavities trochlea part 20. Saidcavities - The
tibia insert 3 or meniscus includes twoposterior edges upper surfaces 12 of saidinsert 3 on the posterior side. Thetibia insert 3 is demarcated by anedge 18 on the anterior side. Saidedge 18 includes twoprojections 19 which have a height greater than the height of posterior edges 16 and 17, relative to the perspective defined by theflat base 21 oftibia insert 3. In a sagittal perspective, saidprojections 19 are circularly curved and have a shape which complements the shapes ofcavities edge 18 and notably at the level ofprojections 19 by means of itscavities cavities projections 19 in a sagittal perspective ofinsert 3, such thatcavities projections 19. - The complete knee prosthetic shown in FIG. 2 is represented in the position depicting a flexion blocked to negative angles, as the angle between the tibia and the femur is equal to minus five degrees.
- A cross-section of the femoral part in a sagittal perspective is shown in FIG. 4.
Circles pin 11, in the positive trigonometric direction. Said angle corresponds to the range of normal flexion, with the condyles sliding over the meniscus as the femur flexes relative to the tibia. -
Cavity 14 is implemented in the trochlea from the end of the condyles (OP axis), at a level corresponding to an angle of ten to thirty degrees along the circle corresponding to the projection of the trochlea part in the sagittal perspective. The height of the projections ofedge 18 is such that the flexing angle is equal to minus five degrees when said projections rests against the cavity.
Claims (10)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0002310A FR2805454B1 (en) | 2000-02-24 | 2000-02-24 | KNEE PROSTHESIS WITH CAVITY IN THE TROCHLE |
FR002310 | 2000-02-24 |
Publications (2)
Publication Number | Publication Date |
---|---|
US20010018615A1 true US20010018615A1 (en) | 2001-08-30 |
US6458160B2 US6458160B2 (en) | 2002-10-01 |
Family
ID=8847344
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/781,792 Expired - Lifetime US6458160B2 (en) | 2000-02-24 | 2001-02-12 | Knee prosthetic with cavity implemented in the trochlea |
Country Status (5)
Country | Link |
---|---|
US (1) | US6458160B2 (en) |
EP (1) | EP1127560B1 (en) |
JP (1) | JP4750956B2 (en) |
ES (1) | ES2660032T3 (en) |
FR (1) | FR2805454B1 (en) |
Cited By (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20040243244A1 (en) * | 2002-12-20 | 2004-12-02 | Jason Otto | High performance knee prostheses |
US20070135926A1 (en) * | 2005-12-14 | 2007-06-14 | Peter Walker | Surface guided knee replacement |
US20090088860A1 (en) * | 2007-09-30 | 2009-04-02 | Romeis Kristen L | Hinged orthopaedic prosthesis |
US20100191341A1 (en) * | 2009-01-28 | 2010-07-29 | Zimmer, Inc. | Lateral condyle posterior inflection for total knee implant |
US7935151B2 (en) | 2001-03-05 | 2011-05-03 | Hudson Surgical Design, Inc. | Femoral prosthetic implant |
US7967822B2 (en) | 1994-09-02 | 2011-06-28 | Hudson Surgical Design, Inc. | Methods and apparatus for orthopedic implants |
US8021368B2 (en) | 2004-01-14 | 2011-09-20 | Hudson Surgical Design, Inc. | Methods and apparatus for improved cutting tools for resection |
US8114083B2 (en) | 2004-01-14 | 2012-02-14 | Hudson Surgical Design, Inc. | Methods and apparatus for improved drilling and milling tools for resection |
US8287545B2 (en) | 2004-01-14 | 2012-10-16 | Hudson Surgical Design, Inc. | Methods and apparatus for enhanced retention of prosthetic implants |
US8603095B2 (en) | 1994-09-02 | 2013-12-10 | Puget Bio Ventures LLC | Apparatuses for femoral and tibial resection |
US8740906B2 (en) | 2004-01-14 | 2014-06-03 | Hudson Surgical Design, Inc. | Method and apparatus for wireplasty bone resection |
US8900316B2 (en) | 2010-01-29 | 2014-12-02 | Smith & Nephew, Inc. | Cruciate-retaining knee prosthesis |
US8926709B2 (en) | 2010-08-12 | 2015-01-06 | Smith & Nephew, Inc. | Structures for use in orthopaedic implant fixation and methods of installation onto a bone |
US9155627B2 (en) | 2010-10-05 | 2015-10-13 | Aesculap Ag | Knee joint prosthesis |
US9642711B2 (en) | 2003-10-17 | 2017-05-09 | Smith & Nephew, Inc. | High flexion articular insert |
US9730799B2 (en) | 2006-06-30 | 2017-08-15 | Smith & Nephew, Inc. | Anatomical motion hinged prosthesis |
US20180036130A1 (en) * | 2015-02-05 | 2018-02-08 | Assistance Publique - Hipitaux De Paris | Total knee prosthesis with ceramic-on-ceramic friction torque and mobile ceramic plate |
US10736748B2 (en) | 2018-05-02 | 2020-08-11 | Depuy Ireland Unlimited Company | Orthopaedic prosthetic system for a hinged-knee prosthesis |
US11033396B2 (en) | 2019-02-05 | 2021-06-15 | Depuy Ireland Unlimited Company | Orthopaedic prosthetic system for a rotating hinged-knee prosthesis |
US11116641B2 (en) | 2019-02-05 | 2021-09-14 | Depuy Ireland Unlimited Company | Orthopaedic prosthetic system for a rotating hinged-knee prosthesis |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2815244B1 (en) * | 2000-10-18 | 2003-06-27 | Aesculap Sa | INCLINED FEMORAL COMPONENT |
CA2424732C (en) * | 2002-04-10 | 2009-05-26 | Biomedical Engineering Trust I | Prosthetic knee with removable stop pin for limiting anterior sliding movement of bearing |
US20040002767A1 (en) * | 2002-06-28 | 2004-01-01 | Joseph Wyss | Modular knee joint prosthesis |
US20040143338A1 (en) * | 2003-01-21 | 2004-07-22 | Brian Burkinshaw | Multi-piece modular patellar prosthetic system |
US7008454B2 (en) * | 2003-04-09 | 2006-03-07 | Biomedical Engineering Trust I | Prosthetic knee with removable stop pin for limiting anterior sliding movement of bearing |
US7261740B2 (en) * | 2003-10-29 | 2007-08-28 | Wright Medical Technology, Inc. | Tibial knee prosthesis |
DE102009029360A1 (en) * | 2009-09-10 | 2011-03-24 | Aesculap Ag | Knee endoprosthesis |
US8900315B2 (en) * | 2009-11-16 | 2014-12-02 | New York Society For The Ruptured And Crippled Maintaining The Hospital For Special Surgery | Constrained condylar knee device |
US8870964B2 (en) * | 2009-11-16 | 2014-10-28 | New York Society For The Ruptured And Crippled Maintaining The Hospital For Special Surgery | Prosthetic condylar joints with articulating bearing surfaces having a translating contact point during rotation thereof |
DE102010000067A1 (en) * | 2010-01-13 | 2011-07-14 | Aesculap AG, 78532 | Knee endoprosthesis |
US8409293B1 (en) | 2011-10-26 | 2013-04-02 | Sevika Holding AG | Knee prosthesis |
AU2013300021B2 (en) * | 2012-08-09 | 2018-08-23 | Peter Stanley Walker | Total knee replacement substituting function of anterior cruciate ligament |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4888021A (en) * | 1988-02-02 | 1989-12-19 | Joint Medical Products Corporation | Knee and patellar prosthesis |
US5358527A (en) * | 1991-03-22 | 1994-10-25 | Forte Mark R | Total knee prosthesis with resurfacing and posterior stabilization capability |
JPH05115499A (en) * | 1991-10-24 | 1993-05-14 | Kobe Steel Ltd | Artificial knee joint |
GB9310193D0 (en) * | 1993-05-18 | 1993-06-30 | Walker Peter S | Knee prosthesis with femoral,tibial conformity |
GB2323034B (en) * | 1997-03-13 | 2001-07-25 | Zimmer Ltd | Prosthesis for knee replacement |
-
2000
- 2000-02-24 FR FR0002310A patent/FR2805454B1/en not_active Expired - Lifetime
-
2001
- 2001-02-12 US US09/781,792 patent/US6458160B2/en not_active Expired - Lifetime
- 2001-02-20 ES ES01400441.0T patent/ES2660032T3/en not_active Expired - Lifetime
- 2001-02-20 EP EP01400441.0A patent/EP1127560B1/en not_active Expired - Lifetime
- 2001-02-22 JP JP2001046493A patent/JP4750956B2/en not_active Expired - Lifetime
Cited By (54)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8603095B2 (en) | 1994-09-02 | 2013-12-10 | Puget Bio Ventures LLC | Apparatuses for femoral and tibial resection |
US9066804B2 (en) | 1994-09-02 | 2015-06-30 | Puget Bioventures Llc | Method and apparatus for femoral and tibial resection |
US7967822B2 (en) | 1994-09-02 | 2011-06-28 | Hudson Surgical Design, Inc. | Methods and apparatus for orthopedic implants |
US8062377B2 (en) | 2001-03-05 | 2011-11-22 | Hudson Surgical Design, Inc. | Methods and apparatus for knee arthroplasty |
US8430932B2 (en) | 2001-03-05 | 2013-04-30 | Puget Bio Ventures LLC | Femoral prosthetic implant |
US9192391B2 (en) | 2001-03-05 | 2015-11-24 | Puget Bioventures Llc | Method for minimally invasive total knee arthroplasty |
US9421022B2 (en) | 2001-03-05 | 2016-08-23 | Puget Bioventures Llc | Method and apparatus for total knee arthroplasty |
US8088167B2 (en) | 2001-03-05 | 2012-01-03 | Hudson Surgical Design, Inc. | Femoral prosthetic implant |
US7935151B2 (en) | 2001-03-05 | 2011-05-03 | Hudson Surgical Design, Inc. | Femoral prosthetic implant |
US9320605B2 (en) | 2002-12-20 | 2016-04-26 | Smith & Nephew, Inc. | High performance knee prostheses |
US8394148B2 (en) | 2002-12-20 | 2013-03-12 | Smith & Nephew, Inc. | Tibial component of high performance knee prosthesis |
US7922771B2 (en) | 2002-12-20 | 2011-04-12 | Smith & Nephew, Inc. | High performance knee prostheses |
US8603178B2 (en) | 2002-12-20 | 2013-12-10 | Smith & Nephew, Inc. | Knee prostheses with convex portion on tibial lateral articular surface |
US20040243244A1 (en) * | 2002-12-20 | 2004-12-02 | Jason Otto | High performance knee prostheses |
US9707087B2 (en) | 2002-12-20 | 2017-07-18 | Smith & Nephew, Inc. | High performance knee prosthesis |
US8652210B2 (en) | 2002-12-20 | 2014-02-18 | Smith & Nephew, Inc. | Femoral prostheses with lateral buttress for patella |
US8647389B2 (en) | 2002-12-20 | 2014-02-11 | Smith & Nephew, Inc. | High performance knee prostheses |
US8394147B2 (en) | 2002-12-20 | 2013-03-12 | Smith & Nephew, Inc. | High performance femoral knee prostheses |
US9402729B2 (en) | 2002-12-20 | 2016-08-02 | Smith & Nephew, Inc. | High performance knee prostheses |
US8398716B2 (en) | 2002-12-20 | 2013-03-19 | Smith & Nephew, Inc. | High performance knee prostheses with posterior cam |
US8398715B2 (en) | 2002-12-20 | 2013-03-19 | Smith & Nephew, Inc. | High performance knee prostheses with converging anterior and posterior portions |
US8403992B2 (en) | 2002-12-20 | 2013-03-26 | Smith & Nephew, Inc. | High performance knee prostheses |
US8425617B2 (en) | 2002-12-20 | 2013-04-23 | Smith & Nephew, Inc. | Knee prostheses with convex slope on portion of tibial articular surface |
US10149768B2 (en) | 2002-12-20 | 2018-12-11 | Smith & Nephew, Inc. | High performance knee prostheses |
US8449618B2 (en) | 2002-12-20 | 2013-05-28 | Smith & Nephew, Inc. | High performance knee prostheses |
US11369477B2 (en) | 2002-12-20 | 2022-06-28 | Smith & Nephew, Inc. | High performance knee prostheses |
US9642711B2 (en) | 2003-10-17 | 2017-05-09 | Smith & Nephew, Inc. | High flexion articular insert |
US8114083B2 (en) | 2004-01-14 | 2012-02-14 | Hudson Surgical Design, Inc. | Methods and apparatus for improved drilling and milling tools for resection |
US8298238B2 (en) | 2004-01-14 | 2012-10-30 | Hudson Surgical Design, Inc. | Methods and apparatus for pivotable guide surfaces for arthroplasty |
US8740906B2 (en) | 2004-01-14 | 2014-06-03 | Hudson Surgical Design, Inc. | Method and apparatus for wireplasty bone resection |
US9814539B2 (en) | 2004-01-14 | 2017-11-14 | Puget Bioventures Llc | Methods and apparatus for conformable prosthetic implants |
US8021368B2 (en) | 2004-01-14 | 2011-09-20 | Hudson Surgical Design, Inc. | Methods and apparatus for improved cutting tools for resection |
US8287545B2 (en) | 2004-01-14 | 2012-10-16 | Hudson Surgical Design, Inc. | Methods and apparatus for enhanced retention of prosthetic implants |
US8353914B2 (en) | 2004-02-02 | 2013-01-15 | Hudson Surgical Design, Inc. | Methods and apparatus for improved profile based resection |
US8211181B2 (en) * | 2005-12-14 | 2012-07-03 | New York University | Surface guided knee replacement |
US20070135926A1 (en) * | 2005-12-14 | 2007-06-14 | Peter Walker | Surface guided knee replacement |
US9730799B2 (en) | 2006-06-30 | 2017-08-15 | Smith & Nephew, Inc. | Anatomical motion hinged prosthesis |
US10779949B2 (en) | 2006-06-30 | 2020-09-22 | Smith & Nephew, Inc. | Anatomical motion hinged prosthesis |
US7918893B2 (en) * | 2007-09-30 | 2011-04-05 | Depuy Products, Inc. | Hinged orthopaedic prosthesis |
US20090088860A1 (en) * | 2007-09-30 | 2009-04-02 | Romeis Kristen L | Hinged orthopaedic prosthesis |
US20100191341A1 (en) * | 2009-01-28 | 2010-07-29 | Zimmer, Inc. | Lateral condyle posterior inflection for total knee implant |
WO2010088263A1 (en) * | 2009-01-28 | 2010-08-05 | Zimmer, Inc. | Lateral condyle with posteriorly located inflection point for total knee implant |
US8900316B2 (en) | 2010-01-29 | 2014-12-02 | Smith & Nephew, Inc. | Cruciate-retaining knee prosthesis |
US10952862B2 (en) | 2010-01-29 | 2021-03-23 | Smith & Nephew, Inc. | Cruciate-retaining knee prosthesis |
US8926709B2 (en) | 2010-08-12 | 2015-01-06 | Smith & Nephew, Inc. | Structures for use in orthopaedic implant fixation and methods of installation onto a bone |
US9155627B2 (en) | 2010-10-05 | 2015-10-13 | Aesculap Ag | Knee joint prosthesis |
US10667920B2 (en) * | 2015-02-05 | 2020-06-02 | Assistance Publique—Hopitaux de Paris | Total knee prosthesis with ceramic-on-ceramic friction torque and mobile ceramic plate |
US11160658B2 (en) | 2015-02-05 | 2021-11-02 | Assistance Publique—Hopitaux de Paris | Total knee prosthesis with ceramic-on-ceramic friction torque and mobile ceramic plate |
US20180036130A1 (en) * | 2015-02-05 | 2018-02-08 | Assistance Publique - Hipitaux De Paris | Total knee prosthesis with ceramic-on-ceramic friction torque and mobile ceramic plate |
US10736748B2 (en) | 2018-05-02 | 2020-08-11 | Depuy Ireland Unlimited Company | Orthopaedic prosthetic system for a hinged-knee prosthesis |
US11833053B2 (en) | 2018-05-02 | 2023-12-05 | Depuy Ireland Unlimited Company | Orthopaedic prosthetic system for a hinged-knee prosthesis |
US11033396B2 (en) | 2019-02-05 | 2021-06-15 | Depuy Ireland Unlimited Company | Orthopaedic prosthetic system for a rotating hinged-knee prosthesis |
US11116641B2 (en) | 2019-02-05 | 2021-09-14 | Depuy Ireland Unlimited Company | Orthopaedic prosthetic system for a rotating hinged-knee prosthesis |
US11696834B2 (en) | 2019-02-05 | 2023-07-11 | Depuy Ireland Unlimited Company | Orthopaedic prosthetic system for a rotating hinged-knee prosthesis |
Also Published As
Publication number | Publication date |
---|---|
ES2660032T3 (en) | 2018-03-20 |
JP4750956B2 (en) | 2011-08-17 |
FR2805454B1 (en) | 2003-01-10 |
US6458160B2 (en) | 2002-10-01 |
EP1127560A1 (en) | 2001-08-29 |
EP1127560B1 (en) | 2018-01-10 |
JP2001252296A (en) | 2001-09-18 |
FR2805454A1 (en) | 2001-08-31 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US6458160B2 (en) | Knee prosthetic with cavity implemented in the trochlea | |
US11369478B2 (en) | Orthopaedic knee prosthesis having controlled condylar curvature | |
US11337823B2 (en) | Orthopaedic femoral component having controlled condylar curvature | |
US5147405A (en) | Knee prosthesis | |
US9925050B2 (en) | Tibial bearing component for a knee prosthesis with improved articular characteristics | |
EP2275053B1 (en) | Orthopaedic knee prosthesis | |
US4959071A (en) | Partially stabilized knee prosthesis | |
US4213209A (en) | Knee joint prosthesis | |
US7998205B2 (en) | Artificial meniscus part and knee-joint prosthesis | |
US5879392A (en) | Knee prosthesis | |
US6506215B1 (en) | Synthetic knee system | |
EP0732091B1 (en) | Mobile bearing total joint replacement | |
JP4167813B2 (en) | Knee joint prosthesis with posterior stabilization support for knee joint holding collateral ligament | |
US5480445A (en) | Interlocking tibial prosthesis | |
EP2042134B1 (en) | Fixed-bearing knee prosthesis having interchangeable components | |
US9289305B2 (en) | Total knee arthroplasty with symmetric femoral implant having double Q-angle trochlear groove | |
US20080058948A1 (en) | Tricompartment prosthesis with reinforcement | |
US9204967B2 (en) | Fixed-bearing knee prosthesis having interchangeable components | |
GB2426201A (en) | Knee prosthesis with cam and follower | |
EP2574311B1 (en) | Fixed-bearing knee prosthesis having a locking mechanism with a concave-to-convex mating interface | |
EP2774582B1 (en) | Fixed-bearing knee prosthesis | |
US20090036993A1 (en) | Patellar implant | |
EP2685936B1 (en) | A tibial tray for a knee joint prosthesis and a knee joint prosthesis including same | |
WO1995022303A2 (en) | Knee joint prostheses | |
GB2302282A (en) | Knee prosthesis |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: AESCULAP, FRANCE Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:BIEGUN, JEAN-FRANCOIS;MARCEAUX, PASCAL;REEL/FRAME:011544/0576 Effective date: 20010122 |
|
STCF | Information on status: patent grant |
Free format text: PATENTED CASE |
|
AS | Assignment |
Owner name: AESCULAP AG & CO. KG, GERMANY Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:AESCULAP;REEL/FRAME:014172/0097 Effective date: 20030422 |
|
FPAY | Fee payment |
Year of fee payment: 4 |
|
AS | Assignment |
Owner name: AESCULAP AG, GERMANY Free format text: CHANGE OF NAME;ASSIGNOR:AESCULAP AG & CO. KG;REEL/FRAME:021731/0524 Effective date: 20080506 Owner name: AESCULAP AG,GERMANY Free format text: CHANGE OF NAME;ASSIGNOR:AESCULAP AG & CO. KG;REEL/FRAME:021731/0524 Effective date: 20080506 |
|
FPAY | Fee payment |
Year of fee payment: 8 |
|
SULP | Surcharge for late payment |
Year of fee payment: 7 |
|
FPAY | Fee payment |
Year of fee payment: 12 |