obturator externus (muscle)
Definition: muscle of medial (adductor) compartment of thigh; origin, lower half of margin of obturator foramen and adjacent part of external surface of obturator membrane; insertion, trochanteric fossa of greater trochanter; action, rotates thigh laterally; nerve supply, obturator.
Synonym(s): musculus obturator externusTA, external obturator muscle
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