Ankle prosthesis
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United States of America Patent
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Dec 1, 2009
Issued Date -
N/A
app pub date -
Oct 14, 2004
filing date -
Oct 14, 2003
priority date (Note) -
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status (Latency Note)
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Abstract
A fixed-bearing ankle prosthesis may include tibial and talar components whose articulating surfaces directly contact one another. The tibial component defines medial and lateral concave condylar facets separated by a convex central portion. The talar component includes medial and lateral convex condyles separated by a concave central portion. The condyles each have a single radius of curvature in a medial-lateral plane such that each condyle has a circular-arc cross-section continuously extending from the respective medial or lateral edge of the talar component to the concave central portion. The medial-lateral radii of the condyles are smaller than corresponding radii of the condylar facets.
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