Bone replacement with different regions of porosities
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United States of America Patent
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-
Jul 18, 1995
Grant Date -
N/A
app pub date -
Mar 12, 1993
filing date -
Mar 14, 1992
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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