Femoral twin-set for a hip endoprosthesis

Details Femoral twin-set for a hip endoprosthesis Femoral twin-set for a hip endoprosthesis

1990-11-27

1993-09-21

Isabella, David

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

Implantable prosthesis

Bone

623 18, A61F 232

Patent

active

052464610

ABSTRACT:
This invention describes a femoral twin-stem for a hip endoprosthesis. The ateral stem portion and the medial stem portion are connected by a bridge. The neck of the femoral twin-stem is connected to the proximal section of the lateral stem portion. The proximal prong of the medial stem portion and the distal prong of the lateral stem portion allow for a gradual load transfer to the bone since they can be individually designed with a proper geometry all the way to their respective tips. Gradual load transfer in turn reduces stresses in the bone cement mantle and improves the long term results of the hip replacement effected with this femoral twin-stem.

REFERENCES:
patent: 3320951 (1967-05-01), Wittebol
patent: 4064567 (1977-12-01), Burstein et al.
patent: 4199824 (1980-04-01), Niederer
patent: 4516277 (1985-05-01), Butel
patent: 4756711 (1988-07-01), Mai

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