Prosthesis (i.e. – artificial body members) – parts thereof – or ai – Implantable prosthesis – Bone
Patent
1995-02-02
1997-12-30
Isabella, David
Prosthesis (i.e., artificial body members), parts thereof, or ai
Implantable prosthesis
Bone
A61F 238
Patent
active
057024588
ABSTRACT:
A knee joint prosthesis comprises femoral and tibial components. The femoral component includes a pair of condyles each curved generally to match the shape of an anatomical femoral condyle. The surface of each condyle is defined by (a) anterior posterior radii R.sub.CF and R.sub.CE, wherein R.sub.CF is the radius of curvature Of that portion of the condyle which is weight bearing in flexion and R.sub.CE represents that portion of the curvature of the condyle which is weight bearing in extension, and (b) a medial lateral radius R.sub.CML. The tibial component includes a pair of concavities, each of which is adapted to receive one of the condyles of the femoral component. The surfaces of the concavities are defined by an anterior posterior radius R.sub.TAP and a medial lateral radius R.sub.TML. The foregoing radii are selected to optimize the balance between range of motion and knee longevity.
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patent: 4892547 (1990-01-01), Brown
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patent: 5147405 (1992-09-01), Vanzile et al.
patent: 5370699 (1994-12-01), Hood et al.
Bartel Donald L.
Burstein Albert H.
Isabella David
New York Society for The Ruptured and Crippled Maintaining The H
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