Ceramic-ceramic articulation surface implants
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United States of America Patent
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Feb 23, 2010
Grant Date -
Apr 28, 2005
app pub date -
Nov 12, 2004
filing date -
Jun 14, 2001
priority date (Note) -
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Abstract
An implantable articulating bone prosthesis (e.g., hip or joint prosthesis) is provided, which includes a pair of articulation components respectively defining a pair of articulation surfaces movably engageable with each other. Each of the articulation surfaces is formed from a biocompatible ceramic (e.g., doped silicon nitride ceramic) having a flexural strength greater than about 700 Mega-Pascal (MPa) and a toughness greater than about 7 Mega-Pascal root meter (MPam.sup.0.5).
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