Shoulder prosthesis

Details Shoulder prosthesis Shoulder prosthesis

1985-03-07

1987-09-15

Apley, Richard J.

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

Implantable prosthesis

Bone

A61F 240

Patent

active

046937234

ABSTRACT:
A prosthesis for mechanical suspension on a human shoulder blade utilizing a swivel joint system formed by a sphere adapted to be fixed to the shoulder blade by a rod integral with an implant anchored in the shoulder blade socket, as well as a humeral cupula articulated to the sphere and adapted to be fixed to the humerus by a diaphyseal projection supporting the cupula and implanted in the humerus, the cupula having a hollow inner hemispherical surface and an open side terminating in surface edges, the axis of the diaphyseal projection passing approximately through the center of the sphere and forming an angle of about 10.degree. with a plane coextensive with the surface edges of the cupula, the sphere being forcefitted directly into the cupula which surrounds the sphere over half the circumference thereof and thereby retains the same, the axis of the rod for fixing the sphere to the shoulder blade socket being eccentrically located with respect to the sphere; and the outer surface of the humeral cupula being hemispherical, concentric with the hollow inner hemispherical surface thereof, and is of a diameter close to that of a normal anatomical humeral head.

REFERENCES:
patent: 3842442 (1974-10-01), Kolbel
patent: 3916451 (1975-11-01), Buechel et al.
patent: 3978528 (1976-09-01), Grep

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