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rider's bone

rider's bone in Medicine

rider's bone rid·er's bone (rī'dərz)
n.
Ossification of the tendon of the long adductor muscle of the leg from strain in horseback riding.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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