Acetabular cup

Details Acetabular cup Acetabular cup

1984-03-07

1989-11-28

Apley, Richard J.

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

Implantable prosthesis

Bone

A61F 234

Patent

active

048834904

ABSTRACT:
An acetabular cup of approximately hemispherical configuration adapted for implantation in the acetabulum and having an outer surface with a generally part-spherical contour and an inner concave bearing surface adapted to receive a femoral head. The outer surface has a plurality of grooves defining segments, and the grooves are adapted to receive, and interlock with, cement for affixing the acetabular cup within the acetabulum. At least one of the grooves has an undercut which defines an overhanging flange. Cement is received in such groove behind the flange to interlock with the flange and to resist loosening of the acetabular cup from the acetabulum. The acetabular cup has spacer lugs on the segments, and a radiopaque marker is embedded in one of the segments in a polar region of the acetabular cup.

REFERENCES:
patent: D232004 (1974-07-01), Amstutz
patent: D232005 (1974-07-01), Farling
patent: D235377 (1975-06-01), Medcraft
patent: 3698017 (1972-10-01), Scales et al.
patent: 3722002 (1973-03-01), Charnley
patent: 3774244 (1973-11-01), Walker
patent: 3840904 (1974-10-01), Tronzo
patent: 4031570 (1977-06-01), Frey
patent: 4123806 (1978-11-01), Amstutz et al.
patent: 4262369 (1981-04-01), Roux
patent: 4285071 (1981-08-01), Nelson et al.
patent: 4327449 (1982-05-01), Charnley
patent: 4437193 (1984-03-01), Oh
"Bard Contour", SP-Prosthesis Cup, Link.

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