Prosthesis (i.e. – artificial body members) – parts thereof – or ai – Implantable prosthesis – Bone
Patent
1989-02-03
1990-09-25
Apley, Richard J.
Prosthesis (i.e., artificial body members), parts thereof, or ai
Implantable prosthesis
Bone
A61F 238
Patent
active
049590715
ABSTRACT:
A knee joint prosthesis includes a femoral component having spaced condylar bearing portions, an anterior intercondylar portion, a posterior intercondylar portion, an intercondylar opening, and a tibial component having spaced bearing surfaces for supporting the bearing portions of the femoral component, and a relatively low intercondylar eminence between the bearing surfaces. The eminence has a peak which defines the highest portion of the tibial component, as measured relative to the tibial plateau. The peak extends into, but not through, the intercondylar opening, such that resection of the femur to provide clearance for the opening and the eminence is not required. The tibial component comprises a base and insert. The insert is preferably a non-metallic pad having the bearing surfaces and eminence formed on a superior surface thereof. The base has a platform for supporting the insert, and a downwardly extending portion for insertion into an opening in the tibia to secure the platform to the tibial plateau. The exterior surface of the posterior intercondylar portion of the femoral component has a longitudinally extending ridge or runner midway between the condylar bearing portions. The intercondylar eminence of the tibial component has a corresponding groove which extends generally parallel to the spaced bearing surfaces. When the knee flexes, the femoral and tibial component rotate with respect to each other and the runner of the femoral component rotatably slides in the groove of the tibial component, coacting to reduce anterior movement of the femoral component.
REFERENCES:
patent: 3728742 (1973-04-01), Averill et al.
patent: 3774244 (1973-11-01), Walker
patent: 3840905 (1974-10-01), Deane
patent: 4209861 (1980-07-01), Walker et al.
patent: 4213209 (1980-07-01), Insall et al.
patent: 4216549 (1980-08-01), Hillberry et al.
patent: 4257129 (1981-03-01), Volz
patent: 4268920 (1981-05-01), Engelbrecht et al.
patent: 4298992 (1981-11-01), Burnstein et al.
patent: 4309778 (1982-01-01), Buechel et al.
patent: 4340978 (1982-07-01), Buechel et al.
patent: 4404691 (1983-09-01), Buning et al.
patent: 4470158 (1984-09-01), Pappas et al.
patent: 4479271 (1984-10-01), Bolesky et al.
patent: 4487203 (1984-12-01), Androphy
patent: 4524766 (1985-06-01), Petersen
patent: 4567885 (1986-02-01), Androphy
patent: 4578081 (1986-03-01), Harder et al.
patent: 4586933 (1986-05-01), Shoji et al.
patent: 4634444 (1987-01-01), Noiles
patent: 4646729 (1987-03-01), Kenna et al.
patent: 4653488 (1987-03-01), Kenna
patent: 4673407 (1987-06-01), Martin
patent: 4714473 (1987-12-01), Bloebaum
"The Posterior Stabilized Condylar Prosthesis: A Modification of a Total Condylar Design," Journal of Bone and Joint Surgery, J. N. Insall et al., vol. 64-A, No. 9, pp. 1317-1323, Dec. 1982.
Brown David R.
Martin Jeff L.
Apley Richard J.
Biomet Inc.
Flaxman Howard
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