Metal anchoring part for a knee joint endoprosthesis

Details Metal anchoring part for a knee joint endoprosthesis Metal anchoring part for a knee joint endoprosthesis

1988-04-13

1990-04-24

Apley, Richard J.

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

Implantable prosthesis

Bone

623 18, A61F 238

Patent

active

049196715

ABSTRACT:
The metal anchoring part, in one embodiment, has a flat bearing surface to receive a synthetic tibial endoprosthesis part as well as a parallel tibial plateau from which anchoring rails project. The anchoring rails are slidably mounted within guide bores in a tibia to permit sliding of the anchoring part in the ventral/dorsal direction. In addition, a lock-like latch is provided in each rail to permit securement of the anchoring part in a tibia after placement. The anchoring part may be made as a half part for mounting on the medial or lateral part of a tibia or as a full part. A rotatable bolt may also be mounted in a pair of aligned rails to expand expandable rings secured to the tibial plateau for securing the part to the spongiosa of the tibia.

REFERENCES:
patent: 3774244 (1973-11-01), Walker
patent: 4158684 (1979-06-01), Klawitter et al.
patent: 4743261 (1988-05-01), Epinette

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