Surgery – Truss – Pad
Patent
1980-02-14
1981-10-13
Crowder, Clifford D.
Surgery
Truss
Pad
128 92C, A61F 103
Patent
active
042939631
ABSTRACT:
The prosthesis disclosed is an unrestrained or hingeless elbow prosthesis including a humeral implant component and an ulnar implant component. The metal humeral component is comprised of an elongated stem with a substantially cylindrical articulating surface on the distal end of said stem wherein said cylindrical articulating surface is convex such that the diameters of the end surfaces of the cylindrical shape are smaller than the diameter about the midportion of the cylindrical shape. The ulnar component is comprised of a metal retainer and a polyethylene bearing. The metal retainer includes an elongated stem attached to a metal base such that the stem depends from the base and anatomically curves slightly outward or laterally from the base.
The polyethylene bearing is slidably engaged to the metal retainer and locks into position on the retainer. The polyethylene bearing contains a concave cylindrical cavity for receiving the convex cylinder of the humeral component.
The metal humeral component then rotates about the axis of its cylindrical articulating surface within the cavity of the polyethylene ulnar bearing of the ulnar component.
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Bolesky Richard C.
Gold Barry L.
Brink Richard H.
Crowder Clifford D.
Geringer Margaret L.
Zimmer USA, Inc.
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