Thumb joint prosthesis
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United States of America Patent
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-
Sep 11, 1990
Grant Date -
N/A
app pub date -
May 1, 1989
filing date -
May 1, 1989
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An improved carpal-metacarpal thumb joint prosthesis comprising carpal and metacarpal components which are tapered and threaded to facilitate fixation and to promote bone ingrowth together with a recess formed in the carpal component for holding a mesh disc to further enhance bone in-growth and having the carpal component formed generally U-shaped cavity containing an insert formed of ultrahigh molecular weight polyethylene which receives the spherical end of a tapered head which is securely received in a corresponding cavity within the metacarpal component.
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