Variable position acetabular cup

Details Variable position acetabular cup Variable position acetabular cup

1989-08-10

1991-03-26

Isabella, David J.

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

Implantable prosthesis

Bone

A61F 232

Patent

active

050025775

ABSTRACT:
A variable position acetabular cup assembly for replacing a natural hip socket includes a symmetrical base cup, a symmetrical polymer bearing, and a nonsymmetrical adapter ring situated between the base cup and the bearing. The base cup is designed to be affixed to the acetabulum to replace the natural socket. The bearing provides a bearing surface for receiving a femur ball. The adapter ring can be mounted on the base cup in a plurality of positions to change the position of the symmetrical bearing after the base cup is secured to the acetabulum.

REFERENCES:
patent: 2765787 (1956-10-01), Pellet
patent: 3829904 (1974-08-01), Ling et al.
patent: 4123806 (1978-11-01), Amstutz et al.
patent: 4327449 (1982-05-01), Charnley
patent: 4385405 (1983-05-01), Teinturier
patent: 4437193 (1984-03-01), Oh
patent: 4623351 (1986-11-01), Church
patent: 4623352 (1986-11-01), Oh
patent: 4650491 (1987-03-01), Parchinski
patent: 4678472 (1987-07-01), Noiles
patent: 4695282 (1987-09-01), Forte et al.
patent: 4822370 (1989-04-01), Schelhas

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