Knee prosthesis

Details Knee prosthesis Knee prosthesis

1991-01-18

1992-08-18

Shay, Randy C.

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

Implantable prosthesis

Bone

A61F 238

Patent

active

051395215

ABSTRACT:
Given is a knee-joint endoprosthesis that displays a femur part with convexly-curved condylar cups, and a tibia part with a tibia plateau insert displaying correspondingly, concavely-curved tip surfaces. A connecting part projects with one end into an intermediate space between the condylar cups, is pivotably connected there with the femur part by means of a transverse bolt, and at the other end has a pin that is rotatably journaled in a boring passing through the tibia plateau. To realize, in the case of this axle knee, a bending movement with additional rolling movement components, the pin of the connecting part is journaled in impact-free, axially-displaceable fashion, and the condylar cups approximate a rotation surface about a condylar cup axis that runs above and parallel to the axis of the transverse bolt.

REFERENCES:
patent: 3868730 (1975-03-01), Kaufer et al.
patent: 4136405 (1979-01-01), Pastrick et al.
patent: 4219893 (1980-09-01), Noiles

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