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Updated: Jan 2 2022

Obturator externus

2.8

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(8)

Images
https://upload.orthobullets.com/topic/10074/images/obturator_externus.jpg
  • Summary
      • Obturator externus
      • Origin
      • Anterior 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  (L3, L4)
      • Arterial supply
      • Obturator and medial circumflex femoral arteries
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