piriform muscle

piriform muscle definition - medical

piriform muscle

noun
A muscle with origin from the margins of the pelvic sacral foramina and the sciatic notch of the ilium, with insertion into the great trochanter, with nerve supply from the sciatic plexus, and whose action rotates the thigh laterally.

The American Heritage® Medical Dictionary Copyright © 2009 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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