Acetabular cup assembly prosthesis

Details Acetabular cup assembly prosthesis Acetabular cup assembly prosthesis

1983-08-26

1987-05-19

Apley, Richard J.

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

Implantable prosthesis

Bone

A61F 234

Patent

active

046664505

ABSTRACT:
An acetabular cup assembly prosthesis comprises the combination of a support shell for introduction into an acetabulum and a socket insert in nesting engagement within the shell. The shell has a generally hemispherical outer surface and a downwardly extending concavity surrounded by a peripheral rim, At least one anchoring post secures the shell to the acetabulum, and a central opening in the bottom of the concavity serves as a connection location for the socket insert. The insert has a hemispherical concavity that articulates with the rounded head of a femoral prosthesis, while the outer surface of the insert nests within the concavity of the support shell. A central fastening tab extends from the insert into locking engagement with the opening in the support shell, and structure is provided to prevent relative rotation of the shell and insert.

REFERENCES:
patent: D230429 (1974-02-01), Davidson
patent: 3685058 (1972-08-01), Tronzo
patent: 3818512 (1974-06-01), Shersher
patent: 3874003 (1975-04-01), Moser et al.
patent: 3875593 (1975-04-01), Shersher
patent: 4164794 (1979-08-01), Spector et al.
patent: 4262369 (1981-04-01), Roux

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