Internal obturator muscle

Internal obturator muscle --> obturator internus

(Science: anatomy, muscle) origin, pelvic surface of obturator membrane and margin of obturator foramen; insertion, passes out of pelvis through lesser sciatic foramen, in so doing, making a 90� turn to insert into the medial surface of greater trochanter; action, rotates thigh laterally; nerve supply, nerve to obturator internus (sacral plexus).

Synonym: musculus obturator internus, internal obturator muscle.

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