FR2740325A1 - Femoral patellar articulation prosthesis - Google Patents
Femoral patellar articulation prosthesis Download PDFInfo
- Publication number
- FR2740325A1 FR2740325A1 FR9512756A FR9512756A FR2740325A1 FR 2740325 A1 FR2740325 A1 FR 2740325A1 FR 9512756 A FR9512756 A FR 9512756A FR 9512756 A FR9512756 A FR 9512756A FR 2740325 A1 FR2740325 A1 FR 2740325A1
- Authority
- FR
- France
- Prior art keywords
- groove
- curvature
- shield
- patellar
- trochlear
- 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
- 210000004417 patella Anatomy 0.000 abstract description 3
- 230000001054 cortical effect Effects 0.000 abstract 1
- NMFHJNAPXOMSRX-PUPDPRJKSA-N [(1r)-3-(3,4-dimethoxyphenyl)-1-[3-(2-morpholin-4-ylethoxy)phenyl]propyl] (2s)-1-[(2s)-2-(3,4,5-trimethoxyphenyl)butanoyl]piperidine-2-carboxylate Chemical compound C([C@@H](OC(=O)[C@@H]1CCCCN1C(=O)[C@@H](CC)C=1C=C(OC)C(OC)=C(OC)C=1)C=1C=C(OCCN2CCOCC2)C=CC=1)CC1=CC=C(OC)C(OC)=C1 NMFHJNAPXOMSRX-PUPDPRJKSA-N 0.000 description 8
- 230000000694 effects Effects 0.000 description 4
- 238000004873 anchoring Methods 0.000 description 3
- 210000000988 bone and bone Anatomy 0.000 description 3
- 210000002414 leg Anatomy 0.000 description 3
- 206010023204 Joint dislocation Diseases 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 210000003127 knee Anatomy 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000002271 resection Methods 0.000 description 2
- 210000000689 upper leg Anatomy 0.000 description 2
- 229910001182 Mo alloy Inorganic materials 0.000 description 1
- 241001227561 Valgus Species 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- FCDDQRGFNZZTMQ-UHFFFAOYSA-N chromium cobalt molybdenum Chemical compound [Cr].[Cr].[Cr].[Cr].[Cr].[Cr].[Cr].[Cr].[Cr].[Cr].[Cr].[Cr].[Cr].[Cr].[Cr].[Cr].[Cr].[Cr].[Cr].[Cr].[Cr].[Cr].[Cr].[Cr].[Cr].[Cr].[Cr].[Cr].[Cr].[Cr].[Co].[Co].[Co].[Co].[Co].[Co].[Co].[Co].[Co].[Co].[Co].[Co].[Co].[Co].[Co].[Co].[Co].[Co].[Co].[Co].[Co].[Co].[Co].[Co].[Co].[Co].[Co].[Co].[Co].[Co].[Co].[Co].[Co].[Co].[Co].[Co].[Co].[Co].[Co].[Co].[Co].[Co].[Co].[Co].[Co].[Co].[Co].[Co].[Co].[Co].[Co].[Co].[Co].[Co].[Co].[Co].[Co].[Co].[Co].[Co].[Co].[Co].[Co].[Co].[Mo].[Mo].[Mo].[Mo].[Mo].[Mo] FCDDQRGFNZZTMQ-UHFFFAOYSA-N 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 229920001903 high density polyethylene Polymers 0.000 description 1
- 239000004700 high-density polyethylene Substances 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 210000000629 knee joint Anatomy 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 210000002303 tibia Anatomy 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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
- A61F2/3877—Patellae or trochleae
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
Description
La présente invention a pour obJet une prothèse de l'articulation fémoro-patellaire. The object of the present invention is a prosthesis for the femoro-patellar joint.
On connaît déJà différentes prothèses de l'articulation fémoro-patellaire, elles comportent généralement d'une part un élément trochléen dénommé bouclier ou carter, implanté en lieu et place de la trochlée naturelle après résection, et d'autre part un élément rotulien dénommé bouton, en forme de calotte sphérique et solidarisé à la face postérieure de la rotule naturelle. We already know different prostheses of the femoro-patellar joint, they generally comprise on the one hand a trochlear element called shield or casing, implanted in place of the natural trochlea after resection, and on the other hand a patellar element called button , in the form of a spherical cap and secured to the rear face of the natural patella.
Le bouton rotulien est destiné à glisser, lors des différents mouvements de flexion extension de la jambe, sur le bouclier trochléen, guidé dans une gorge convexe dans le plan sagittal et concave dans le plan transversal. The patellar button is intended to slide, during the various flexion movements extending the leg, over the trochlear shield, guided in a convex groove in the sagittal plane and concave in the transverse plane.
Par le document FR-A-2.521.421, on connaît un bouclier dont la courbure de la gorge dans le plan sagittal est en forme de secteur de segment de tore tubulaire, donc de rayon constant, et qui présente des inconvénients
En effet, lors du passage de l'extension à la flexion, le bouton rotulien, qui en extension est positionné au-dessus du bord du bouclier trochléen, bute sur celui-ci avec pour effet, outre un claquement nettement audiole, un effet de came favorisant la formation d'un jeu susceptible d'entraîner à la longue des luxations ou des sub-luxations.Document FR-A-2,521,421 discloses a shield whose curvature of the groove in the sagittal plane is in the form of a sector of a tubular torus segment, therefore of constant radius, and which has drawbacks
Indeed, during the passage from extension to flexion, the patellar button, which in extension is positioned above the edge of the trochlear shield, abuts on it with the effect, in addition to a clearly audiole click, an effect of cam favoring the formation of a game likely to lead in the long run to dislocations or sub-dislocations.
On connaît également par le document FR-A2.676.641 une prothèse fémoro-patellaire dont la partie supérieure de la gorge du bouclier trochléen dans sa partie est, dans le plan sagittal, de rayon variable, croissant de la partie médiane vers les parties extrêmes, mais qui par contre ne permet pas un parfait maintien latéral du bouton rotulien dans les efforts en flexion valgus rotation avec risque de luxation. Document FR-A2.676.641 also discloses a femoro-patellar prosthesis, the upper part of the throat of the trochlear shield in its part is, in the sagittal plane, of variable radius, increasing from the middle part towards the extreme parts, but which on the other hand does not allow perfect lateral support of the patellar button in flexion valgus rotation efforts with risk of dislocation.
Ceci est principalement dû à la faible profondeur dans le sens transversal de la gorge, une profondeur plus importante nécessiterait, du fait de l'architecture globale du bouclier, une résection osseuse plus importante, susceptible de nuire la pose ultérieure éventuelle d'une prothèse totale de l'articulation du genou. This is mainly due to the shallow depth in the transverse direction of the throat, a greater depth would require, due to the overall architecture of the shield, a larger bone resection, likely to harm the possible subsequent installation of a total prosthesis of the knee joint.
La présente invention a pour but de remédier à ces inconvénients en proposant une protnèse fémoropatellaire permettant d'éviter un effet de came et d'assurer un auto-centrage du bouton rotulien. The object of the present invention is to remedy these drawbacks by proposing a femoropatellar protesis making it possible to avoid a cam effect and to ensure self-centering of the patellar button.
La prothèse selon l'lnvention se caractérise essentiellement en ce que d'une part elle comporte un bouclier trochléen dont la courbure de la gorge dans le plan sagittal est de rayon variable dont les valeurs sont croissantes de la partie inférieure à la partie supérieure de ladite gorge, tout en restant inférieures à celles de la trochlée osseuse qui de plus croissent plus vite dans ladite partie supérieure, de manière que le bord de cette dernière s'encastre sous la corticale; et en ce que d'autre part le fond de ladite gorge a une courbure dans le sens transversal de rayon constant au moins égal à celui du bouton rotulien, ledit fond étant prolongé latéralement de façon tangente par deux berges planes formant entre elles un V d'angle compris entre 110 et 130 ; et en ce que d'autre part encore, la berge externe est plus large et de pente moins importante que la berge interne, et se prolonge vers le haut dans sa partie supérieure. The prosthesis according to the invention is essentially characterized in that on the one hand it comprises a trochlear shield whose curvature of the throat in the sagittal plane is of variable radius whose values are increasing from the lower part to the upper part of said throat, while remaining lower than those of the bony trochlea which moreover grow faster in said upper part, so that the edge of the latter is embedded under the cortex; and in that on the other hand the bottom of said groove has a curvature in the transverse direction of constant radius at least equal to that of the patellar button, said bottom being extended laterally tangentially by two plane banks forming between them a V d 'angle between 110 and 130; and in that, on the other hand, the external bank is wider and of less steep slope than the internal bank, and extends upwards in its upper part.
L'engagement du bouton rotulien sur le bouclier trochléen, lors de l'amorce d'une flexion, est réalisé sans ressaut et en premier sur la berge externe, évitant ainsi le risque de sub-luxation. The engagement of the patellar button on the trochlear shield, during the initiation of a flexion, is carried out without projection and first on the external bank, thus avoiding the risk of subluxation.
Le bouton rotulien reste en permanence centré dans la gorge du bouclier trochléen, les forces de pression s'exercent, quel que soit l'angle de flexion, perpendiculairement au bouclier, évitant ainsi toute sollicitation en arrachement ou en bascule. The patellar button remains permanently centered in the throat of the trochlear shield, the pressure forces are exerted, whatever the angle of flexion, perpendicular to the shield, thus avoiding any pulling or rocking stress.
D'autre part, lorsque le bouton rotulien se déplace vers l'extérieur, lors d'une rotation externe du genou, il y a, du fait des pentes différentes des berges interne et externe, une augmentation du couple de contrôle rotatoire du genou, favorisant la rotation externe du fémur sur le tibia, évitant ainsi la luxation de la rotule. On the other hand, when the patellar button moves outward, during an external rotation of the knee, there is, due to the different slopes of the internal and external banks, an increase in the rotary control torque of the knee, favoring the external rotation of the femur on the tibia, thus avoiding the dislocation of the patella.
Selon une caractéristique additionnelle de la prothèse selon l'invention, le bouclier trochléen comporte dans sa partie inférieure deux échancrures latérales, l'échancrure externe étant plus importante que l'échancrure interne pour favoriser le glissement du condyle fémoral externe
Selon une autre caractéristique additionnelle de la prothèse selon l'invention, le bord inférieur du bouclier trochléen est tranchant pour permettre son engagement dans la corticale.According to an additional characteristic of the prosthesis according to the invention, the trochlear shield has in its lower part two lateral notches, the external notch being more important than the internal notch to promote the sliding of the external femoral condyle
According to another additional characteristic of the prosthesis according to the invention, the lower edge of the trochlear shield is sharp to allow its engagement in the cortex.
Les avantages et les caractéristiques de la présente invention ressortiront plus clairement de la description qui suit et qui se rapporte au dessin annexé, lequel en représente un mode de réalisation non limitatif. The advantages and characteristics of the present invention will emerge more clearly from the description which follows and which refers to the appended drawing, which represents a non-limiting embodiment thereof.
Dans le dessin annexé
- la figure 1 représente une vue en perspective d'une prothèse fémoro-patellaire gauche selon l'invention.In the attached drawing
- Figure 1 shows a perspective view of a left femoro-patellar prosthesis according to the invention.
- la figure 2 représente une vue en développé du bouclier trochléen de la même prothèse. - Figure 2 shows a developed view of the trochlear shield of the same prosthesis.
- la figure 3 représente une vue en coupe selon l'axe XX' de la figure 2. - Figure 3 shows a sectional view along the axis XX 'of Figure 2.
- la figure 4 représente une vue de profil et en coupe partielle de la même prothèse implantée, lorsque la jambe est en extension. - Figure 4 shows a side view in partial section of the same implanted prosthesis, when the leg is extended.
Si on se réfère à la figure 1 on peut voir qu'une prothèse fémoro-patellaire comporte de manière connue un bouclier trochléen l et un bouton rotulien 2. If we refer to FIG. 1, we can see that a femoro-patellar prosthesis comprises in a known manner a trochlear shield 1 and a patellar button 2.
Le carter trochléen 1 est réalisé en métal, plus particulièrement en alliage chrome-cobalt-molybdène, tandis que le bouton rotulien 2 est réalisé en matière synthétique, par exemple en polyéthylène haute densité. The trochlear casing 1 is made of metal, more particularly of chromium-cobalt-molybdenum alloy, while the patellar button 2 is made of synthetic material, for example high density polyethylene.
Le bouton rotulien 2 comporte une calotte sphérique 20 et, saillant de sa face postérieure 21, deux plots d'ancrage 22 de faible encombrement ce qui facilite une éventuelle reprise. The patellar button 2 has a spherical cap 20 and, projecting from its rear face 21, two anchoring studs 22 of small size which facilitates possible recovery.
La face postérieure 21 comporte également des stries 23 destinées à améliorer l'ancrage du bouton rotulien 2 à la rotule au moyen de ciment. The rear face 21 also includes grooves 23 intended to improve the anchoring of the patellar button 2 to the ball joint by means of cement.
Le carter l comporte dans la partie supérieure de sa face postérieure 10 trois plots d'ancrage 11 destinés à être implantés dans la matière osseuse en lieu et place de la trochlée naturelle entre les deux condyles. Cette implantation peut être réalisée sans ciment, ce qui facilite une éventuelle reprise au moyen d'une prothèse totale en cas de dégradation de l'articulation. The housing 1 comprises in the upper part of its rear face 10 three anchoring studs 11 intended to be implanted in the bone material in place of the natural trochlea between the two condyles. This implantation can be carried out without cement, which facilitates a possible recovery by means of a total prosthesis in the event of degradation of the joint.
Si on se réfère également à la figure 2 on peut voir que la partie inférieure 13 du carter 1 est échancrée latéralement, et plus particulièrement du côté externe où une échancrure 14 favorise le glissement du condyle fémoral externe et autorise l'association de la prothèse selon l'invention avec une prothèse uni-condylienne. If we also refer to Figure 2 we can see that the lower part 13 of the casing 1 is notched laterally, and more particularly on the external side where a notch 14 promotes the sliding of the external femoral condyle and allows the association of the prosthesis according to the invention with a uni-condylar prosthesis.
Le carter 1 comporte de manière connue une gorge 12 convexe dans le plan sagittal et concave dans le sens transversal, toutefois, selon la figure 3 on peut voir que dans le sens transversal la gorge 12 comporte plusieurs parties, une partie centrale 15 correspondant au fond de la gorge 20, de rayon constant au moins égal à celui de la calotte sphérique 20 du bouton rotulien 2, et deux berges planes 16 et 17, s'étendant tangentement à la partie centrale 15, et formant un V d'angle compris entre 110 et 130 . The casing 1 comprises in known manner a groove 12 convex in the sagittal plane and concave in the transverse direction, however, according to FIG. 3 it can be seen that in the transverse direction the groove 12 comprises several parts, a central part 15 corresponding to the bottom of the groove 20, of constant radius at least equal to that of the spherical cap 20 of the patellar button 2, and two flat banks 16 and 17, extending tangentially to the central part 15, and forming a V with an angle between 110 and 130.
La berge externe 17 est plus large que la berge interne 16, et, comme cela est visible sur les figures 1 et 2, dans la partie supérieure 18 du bouclier 1, son extrémité 19 s'étend plus haut. The external bank 17 is wider than the internal bank 16, and, as can be seen in FIGS. 1 and 2, in the upper part 18 of the shield 1, its end 19 extends higher.
En référence à la figure 4, qui montre un bouclier 1 implanté dans le fémur 3 d'une jambe en extension et un bouton rotulien implanté dans une rotule 4, on peut voir que la gorge 12 du bouclier 1 est, dans le sens sagittal, de courbure de rayon variable, dont la valeur va croissant de la partie inférieure 13 à la partie supérieure 18, tout en restant inférieure à celle du rayon de courbure de la trochlée naturelle 30 représentée en trait discontinu, la différence de rayon pouvant même être croissante dans la partie supérieure 18
La différence de courbure entre le bouclier 1 et la trochlée naturelle 3 permet un encastrement du bouclier 1 et d'enfouir le bord supérieur 180 de ce dernier sous la corticale.With reference to FIG. 4, which shows a shield 1 implanted in the femur 3 of an extended leg and a patellar button implanted in a ball joint 4, it can be seen that the groove 12 of the shield 1 is, in the sagittal direction, of curvature of variable radius, the value of which increases from the lower part 13 to the upper part 18, while remaining less than that of the radius of curvature of the natural trochlea 30 shown in broken lines, the difference in radius may even be increasing in the upper part 18
The difference in curvature between the shield 1 and the natural trochlea 3 allows the shield 1 to be embedded and to bury the upper edge 180 of the latter under the cortex.
Ces éléments associés à la remontée 19 de la berge externe 17 favorisent l'engagement et le guidage du bouton rotulien 2 lors du passage de l'extension à la flexion, en supprimant l'effet de came et les risques de sub-luxation. These elements associated with the ascent 19 of the outer bank 17 promote the engagement and guiding of the patellar button 2 during the transition from extension to flexion, by eliminating the cam effect and the risks of subluxation.
D'autre part, en flexion complète le bouton 2 échappe du bouclier 1, aussi, afin d'éviter un ressaut lors du retour à l'extension, le bord inférieur 130 du bouclier 1 est biseauté pour permettre son insertion dans la matière osseuse. On the other hand, in complete bending the button 2 escapes from the shield 1, also, in order to avoid a projection when returning to the extension, the lower edge 130 of the shield 1 is bevelled to allow its insertion into the bone material.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9512756A FR2740325B1 (en) | 1995-10-25 | 1995-10-25 | PROSTHESIS OF THE FEMOROPATAL JOINT |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9512756A FR2740325B1 (en) | 1995-10-25 | 1995-10-25 | PROSTHESIS OF THE FEMOROPATAL JOINT |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2740325A1 true FR2740325A1 (en) | 1997-04-30 |
| FR2740325B1 FR2740325B1 (en) | 1998-02-20 |
Family
ID=9484027
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR9512756A Expired - Fee Related FR2740325B1 (en) | 1995-10-25 | 1995-10-25 | PROSTHESIS OF THE FEMOROPATAL JOINT |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2740325B1 (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1265559A1 (en) * | 2000-03-17 | 2002-12-18 | Kinamed, Inc. | A custom replacement device for resurfacing a femur and method of making the same |
| WO2005046532A2 (en) * | 2003-11-07 | 2005-05-26 | University Of Vermont And State Agricultural College | Knee joint prosthesis with a femoral component which links the tibiofemoral axis of rotation with the patellofemoral axis of rotation |
| EP1711131A2 (en) * | 2004-01-12 | 2006-10-18 | Paul A. Lotke | Patello-femoral prosthesis |
| EP1955676A1 (en) * | 2007-02-06 | 2008-08-13 | Zimmer Technology, Inc. | Femoral trochlea prostheses |
| EP1864629A3 (en) * | 2006-06-07 | 2009-05-20 | Howmedica Osteonics Corp. | Flexible joint implant |
| US7582118B2 (en) | 2007-02-06 | 2009-09-01 | Zimmer Technology, Inc. | Femoral trochlea prostheses |
| US20100222781A1 (en) * | 2009-02-27 | 2010-09-02 | Howmedica Osteonics Corp. | Spot facing trochlear groove |
| US8157867B2 (en) | 2004-07-09 | 2012-04-17 | Zimmer, Inc. | Trochlear groove implants and related methods and instruments |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4151615A (en) * | 1977-06-29 | 1979-05-01 | Hall Thomas D | Prosthetic patello-femoral joint |
| FR2440185A1 (en) * | 1978-11-06 | 1980-05-30 | Orengo Philippe | Prosthesis for femoral-patellar articulation - is curved cap with partly arcuate cross=section fixed to end of femur by ridged spike |
| FR2521421A1 (en) * | 1982-02-18 | 1983-08-19 | Grammont Paul | TOTAL TROCHLEO-PATTELLAR KNEE PROSTHESIS |
| EP0336861A1 (en) * | 1988-04-01 | 1989-10-11 | Christian Broc | Implant femoro-patellar |
| FR2682589A1 (en) * | 1991-10-16 | 1993-04-23 | Laboureau Jacques Philippe | Trochlear element for femoral/knee ball prosthesis |
-
1995
- 1995-10-25 FR FR9512756A patent/FR2740325B1/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4151615A (en) * | 1977-06-29 | 1979-05-01 | Hall Thomas D | Prosthetic patello-femoral joint |
| FR2440185A1 (en) * | 1978-11-06 | 1980-05-30 | Orengo Philippe | Prosthesis for femoral-patellar articulation - is curved cap with partly arcuate cross=section fixed to end of femur by ridged spike |
| FR2521421A1 (en) * | 1982-02-18 | 1983-08-19 | Grammont Paul | TOTAL TROCHLEO-PATTELLAR KNEE PROSTHESIS |
| EP0336861A1 (en) * | 1988-04-01 | 1989-10-11 | Christian Broc | Implant femoro-patellar |
| FR2682589A1 (en) * | 1991-10-16 | 1993-04-23 | Laboureau Jacques Philippe | Trochlear element for femoral/knee ball prosthesis |
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1265559A4 (en) * | 2000-03-17 | 2007-12-19 | Kinamed Inc | A custom replacement device for resurfacing a femur and method of making the same |
| EP1265559A1 (en) * | 2000-03-17 | 2002-12-18 | Kinamed, Inc. | A custom replacement device for resurfacing a femur and method of making the same |
| WO2005046532A2 (en) * | 2003-11-07 | 2005-05-26 | University Of Vermont And State Agricultural College | Knee joint prosthesis with a femoral component which links the tibiofemoral axis of rotation with the patellofemoral axis of rotation |
| WO2005046532A3 (en) * | 2003-11-07 | 2006-03-23 | Ge University Of Vermont And S | Knee joint prosthesis with a femoral component which links the tibiofemoral axis of rotation with the patellofemoral axis of rotation |
| US7387644B2 (en) | 2003-11-07 | 2008-06-17 | University Of Vermont And State Agricultural College | Knee joint prosthesis with a femoral component which links the tibiofemoral axis of rotation with the patellofemoral axis of rotation |
| EP1711131A4 (en) * | 2004-01-12 | 2010-01-06 | Paul A Lotke | Patello-femoral prosthesis |
| EP1711131A2 (en) * | 2004-01-12 | 2006-10-18 | Paul A. Lotke | Patello-femoral prosthesis |
| US9675463B2 (en) | 2004-01-12 | 2017-06-13 | Paul A. Lotke | Patello-femoral prosthesis |
| US8157867B2 (en) | 2004-07-09 | 2012-04-17 | Zimmer, Inc. | Trochlear groove implants and related methods and instruments |
| US8852195B2 (en) | 2004-07-09 | 2014-10-07 | Zimmer, Inc. | Guide templates for surgical implants and related methods |
| EP1864629A3 (en) * | 2006-06-07 | 2009-05-20 | Howmedica Osteonics Corp. | Flexible joint implant |
| US7582118B2 (en) | 2007-02-06 | 2009-09-01 | Zimmer Technology, Inc. | Femoral trochlea prostheses |
| US8128704B2 (en) | 2007-02-06 | 2012-03-06 | Zimmer, Inc. | Femoral trochlea prostheses |
| US8888858B2 (en) | 2007-02-06 | 2014-11-18 | Zimmer, Inc. | Femoral trochlea prostheses |
| US9566160B2 (en) | 2007-02-06 | 2017-02-14 | Zimmer, Inc. | Femoral trochlea prostheses |
| EP1955676A1 (en) * | 2007-02-06 | 2008-08-13 | Zimmer Technology, Inc. | Femoral trochlea prostheses |
| US20100222781A1 (en) * | 2009-02-27 | 2010-09-02 | Howmedica Osteonics Corp. | Spot facing trochlear groove |
| US8480753B2 (en) * | 2009-02-27 | 2013-07-09 | Howmedica Osteonics Corp. | Spot facing trochlear groove |
| US9339280B2 (en) | 2009-02-27 | 2016-05-17 | Stryker Corporation | Spot facing trochlear groove |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2740325B1 (en) | 1998-02-20 |
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