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internal obturator muscle in Medicine

internal obturator muscle

n.
  1. A muscle with origin from the pelvic surface of the obturator membrane and the margin of the obturator foramen, with insertion into the medial surface of the greater trochanter, with nerve supply from the sacral plexus, and whose action rotates the thigh laterally.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.