Fixation of implants in bone

Details Fixation of implants in bone Fixation of implants in bone

1985-01-15

1988-06-28

Apley, Richard J.

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

Implantable prosthesis

Bone

623 23, A61F 228

Patent

active

047536578

ABSTRACT:
A bone implant assembly having an implant element whereof a stem portion is for insertion into a bone cavity, and wedge means for wedging between a proximal region of the cavity wall and the stem. The stem is tapered so that deeper insertion urges the wedge means against the wall. The wedge means may comprise lateral and medial wedges. Each may comprise a stem engaging portion with a low-friction surface, and an outer, wall engaging portion having a surface adapted for non-slip engagement, being a high friction surface and/or adapted for ingrowth of bone.

REFERENCES:
patent: 3793650 (1974-02-01), Ling et al.
patent: 4064567 (1977-12-01), Burstein
patent: 4158893 (1979-06-01), Swanson
patent: 4314381 (1982-02-01), Koeneman
patent: 4406023 (1983-09-01), Harris

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