Endoprosthesis

Details Endoprosthesis Endoprosthesis

1988-06-10

1990-12-18

Isabella, David J.

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

Implantable prosthesis

Bone

623 20, 623 23, A61F 230

Patent

active

049783572

ABSTRACT:
An endoprosthesis is equipped with a collar and a prosthesis shaft and is adapted to be anchored longitudinally in a bone without the use of cement. A hip endoprosthesis can be constructed for anchorage in the proximal femur, in which the prosthesis shaft is composed of a plurality of parallel interconnected thin plates which are configured as plate-shaped partial faces and which have peripheral cutting edges which face away from the prosthesis collar. A tibial plateau prosthesis can be similary constructed, and includes a tibial plateau and a supporting structure formed of thin plates which extend in a common direction and which are interconnected. Both types of prosthesis can be driven into the bone without destruction of existing bone tissue and without removal of spongiosa. A shaft structure is employed which ensures the firmest possible anchorage in the medullary space, with a porous surface being provided to facilitate the in-growth of spongy material to thereby increase the strength of the anchorage of the prosthesis shaft.

REFERENCES:
patent: 4287617 (1981-09-01), Tornier

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