quadrate muscle of thigh

n.

A muscle with origin from the lateral border of the tuberosity of the ischium, with insertion into the intertrochanteric crest, 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.