Knee joint prosthesis articular surface

Details Knee joint prosthesis articular surface Knee joint prosthesis articular surface

1991-07-10

1993-04-20

Green, Randall L.

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

Implantable prosthesis

Bone

A61F 238

Patent

active

052038076

ABSTRACT:
A knee replacement prosthesis includes a tibial component and a femoral component with improved articular surface geometries. The improved geometries allow substantial internal rotation of the tibial component with respect to the femoral component during at least the first twenty degrees (20.degree.) of flexion. The tibial and femoral components are capable of flexing about an axis that reaches an inclination of from about ten degrees (10.degree.) to about fifty degrees (50.degree.) to the horizontal.

REFERENCES:
patent: 4911721 (1990-03-01), Branemark et al.
patent: 4959071 (1990-09-01), Brown et al.
Karrholm, Johan: "Roentgen Stereophotogrammetry--Review of Orthopedic Applications", Acta Orthop Scand 1989, 60(4) pp. 491-503.
"Surgical Technique--Genesis.TM. Total Knee System Cruciate-Retaining Primary Technique" (Smith+Nephew Richards brochure).

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