Plastic knee femoral implants
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United States of America Patent
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Oct 25, 1994
Grant Date -
N/A
app pub date -
Mar 5, 1993
filing date -
Mar 5, 1993
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A knee prosthesis includes plastic femoral and metallic (or ceramic) tibial components. The plastic femoral knee component articulates against a polished metal (e.g. cobalt alloy, titanium alloy, or stainless steel), or preferably ceramic (e.g. alumina, zirconia, nitride, or boride) patella and tibial components in a total knee implant. The polymer femoral material can be of a polymer such as ultra high molecular weight polyethylene, or a polymer blend or a fiber or particle reinforced polymer, or layered polymers.
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