Bone replacement with different regions of porosities

Details Bone replacement with different regions of porosities Bone replacement with different regions of porosities

1993-03-12

1995-07-18

Isabella, David

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

Implantable prosthesis

Bone

623 66, 623 23, A61F 228

Patent

active

054337500

ABSTRACT:
An implant is provided for replacement of bones, especially a joint replacement with an open-mesh three-dimensional structure at least partly covering its surface. The surface structure (1) is in its surface extension divided into at least two discrete zones (A, B, C) with different mesh sizes. After the implantation, bone material grows into the three-dimensional structure. The distribution of the zones of different mesh sizes on the surface of the implant depends on the pore size of the natural spongiosa of the bone onto or into which the implant is to be inserted.

REFERENCES:
patent: 3808606 (1974-05-01), Tronzo
patent: 3840904 (1974-10-01), Tronzo et al.
patent: 4542539 (1985-09-01), Rowe et al.
patent: 4553272 (1985-11-01), Mears
patent: 4865608 (1989-09-01), Brooker, Jr.
patent: 4911720 (1990-03-01), Collier

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