System for producing a knee-joint endoprosthesis

Details System for producing a knee-joint endoprosthesis System for producing a knee-joint endoprosthesis

1996-11-08

1999-02-16

Willse, David H.

Prosthesis (i.e., artificial body members), parts thereof, or ai

Implantable prosthesis

Bone

A61F 238

Patent

active

058715410

ABSTRACT:
System to produce a knee-joint endoprosthesis with joint elements (10) are constructed to be attached to the lower end of the femur, and have a convexly curved joint bearing surface. Bearing elements (12) are constructed to be attached to the upper end of the tibia (11). A meniscus (14) is movably disposed between each femoral joint element (10) and tibial bearing element (12) and are provided on its upper and lower sides with sliding surfaces complementary in shape to the associated joint bearing surface of the femoral joint element (10) and the associated bearing surface of the tibial bearing element (12), respectively. The peripheral or sagittally outer boundary (16) of the sliding surfaces (15) of the menisci (14) that face the femoral joint elements (10) is higher than their central or sagittally inner boundary. The system is designed for modular, universally compatible supplementation to form a total knee prosthesis, revision prosthesis or femoropatellar joint prosthesis.

REFERENCES:
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patent: 4007495 (1977-02-01), Frazier
patent: 4034418 (1977-07-01), Jackson et al.
patent: 4340978 (1982-07-01), Buechel et al.
patent: 4714472 (1987-12-01), Averill et al.
patent: 4883488 (1989-11-01), Bloebaum et al.
patent: 5047057 (1991-09-01), Lawes
patent: 5395401 (1995-03-01), Bahler
patent: 5470354 (1995-11-01), Hershberger et al.

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