Collared hip prosthesis with revision spacer

Details Collared hip prosthesis with revision spacer Collared hip prosthesis with revision spacer

1993-08-03

1994-12-27

Isabella, David

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

Implantable prosthesis

Bone

623 18, A61F 236

Patent

active

053761243

ABSTRACT:
A spacer to be used with femoral hip prostheses. The spacer is placed under a existing collar of a femoral hip prosthesis and cemented or tied in place or both. The spacer comprises a U-shaped segment adapted to fit under a medial collar and partially enclose part of a proximal portion of the stem of a hip prosthesis. Spacer plugs are provided to offset the spacer slightly and provide a space which is filled with bone cement (PMMA), securely attaching the spacer to the prosthesis. A distal ledge which lies adjacent the proximal body of the prosthesis keeps the cement enclosed between the stem and the spacer. An area of porous coating is provided distally. A peripheral groove is also provided.

REFERENCES:
patent: 2781758 (1957-02-01), Chevalier
patent: 2785673 (1957-03-01), Anderson
patent: 4012796 (1977-03-01), Weisman et al.
patent: 4698063 (1987-10-01), Link et al.
patent: 4753657 (1988-06-01), Lee et al.
patent: 4770666 (1988-09-01), Averill
patent: 4783192 (1988-11-01), Wroblewski et al.
patent: 5047061 (1991-09-01), Brown
patent: 5057101 (1991-10-01), Dorr et al.
patent: 5116380 (1992-05-01), Hewka et al.
patent: 5201769 (1993-04-01), Schutler

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