Hip joint prosthesis having a zirconia head and a ceramic cup
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United States of America Patent
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Feb 16, 1999
Issued Date -
N/A
app pub date -
Aug 16, 1996
filing date -
Mar 1, 1996
priority date (Note) -
Expired
status (Latency Note)
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Abstract
This invention relates to a biojoint prosthesis comprising: a) a prosthetic comprising a first component having an outer surface comprising at least 90 mol% zirconia, and b) a second component having a surface shaped to receive the outer surface of the first component, wherein the outer surface of the first component is received on the surface of the second component, and wherein a) at least a portion of the surface of the second component receiving the first component comprises a ceramic having a surface roughness of no more than 100 nm, and b) the outer surface of the first component has a surface roughness of no more than 100 nm.
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