Femoral implant for hip arthroplasty

Details Femoral implant for hip arthroplasty Femoral implant for hip arthroplasty

1990-01-17

1992-07-28

Isabella, David J.

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

Implantable prosthesis

Bone

A61F 232

Patent

active

051337720

ABSTRACT:
The present invention concerns a femoral hip prosthetic implant, and a process, that incorporates an interior channel in the implant, which channel permits the implant, after it is properly positioned in a canal at the proximal end of a prepared femur, to be left in that position. Cement is then injected through that channel and discharged through medial ports in the implant to flood and up-well in the space between the implant and the femoral canal, thereby bonding and sealing the implant to the proximal portion of the femur while the implant remains seated in the desired position within the femur. Preferably a collar is provided at the distal portion of the stem to firmly seat and center the stem within the femoral canal. Also, preferably a spacer is provided at the mid-portion of the stem to center the stem within the femoral canal and to prevent cement from passing down the femoral canal beyond the proximal end of the stem.

REFERENCES:
patent: 4494535 (1985-01-01), Haig
patent: 4653487 (1987-03-01), Maale
patent: 4753657 (1988-06-01), Lee et al.
patent: 4988359 (1991-01-01), Frey et al.

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