Zirconium oxide coated prosthesis for wear and corrosion resistance
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United States of America Patent
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Aug 6, 1991
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N/A
app pub date -
Jul 25, 1989
filing date -
Jul 25, 1989
priority date (Note) -
Expired
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Abstract
Orthopedic implants of zirconium or zirconium-based alloy coated with zirconium oxide to provide low friction, highly wear resistant coatings especially useful in artificial joints, such as hip joints, knee joints, elbows, etc. The invention zirconium oxide coated prostheses are also useful in that the zirconium oxide coatings provide a barrier against implant corrosion caused by ionization of the metal prosthesis. Such protection can be extended by the use of oxidized porous coatings of zirconium or zirconium alloy beads or wire mesh into which bone spicules may grow so that the prosthesis may be integrated into the living skeleton.
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