Porous acetabular hip resurfacing

Details Porous acetabular hip resurfacing Porous acetabular hip resurfacing

1985-08-23

1987-12-29

Apley, Richard J.

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

Implantable prosthesis

Bone

A61F 234

Patent

active

047158603

ABSTRACT:
An artificial hip joint includes a socket or acetabular portion and a femoral portion secured to the upper leg bone or femur. A continuous metal acetabular cup for an artificial hip joint is provided with a right cylindrical portion and chamfered dome which is of porous titanium or other suitable material, including a coating of either sintered fibers or sintered small particles such as spheres, to encourage early bone ingrowth, following force fit insertion of the cup into the acetabulum. A plastic insert having a central recess for receiving the femoral ball, is inserted into the cup and includes interlockng elements for holding the plastic insert firmly into the metal cup and against rotation, and a flange extending over the lip of the metal cup to preclude metal to metal contact.

REFERENCES:
patent: 3605123 (1971-09-01), Hahn
patent: 3840904 (1974-10-01), Tronzo
patent: 3982281 (1976-09-01), Giliberty
patent: 4123806 (1978-11-01), Amstutz

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