Updated: 2/12/2018

Obturator Externus

Review Topic
https://upload.medbullets.com/topic/121938/images/obturator externus.jpg

Origin External surface of obturator membrane and anterior bony margins of obturator foramen
Insertion Trochanteric fossa on the medial surface of the greater trochanter
Action Rotates the thigh laterally; also helps adduct thigh
Innervation Posterior division of obturator nerve innervates most of the obturator externus;  (L3, L4)
Arterial Supply Obturator and medial circumflex femoral arteries




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