Updated: 1/2/2022

Obturator internus

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  • Summary
      • Obturator internus
      • Origin
      • Internal surface of obturator membrane and posterior bony margins of obturator foramen
      • Insertion
      • Medial surface of greater trochanter of femur, in common with superior and inferior gemelli
      • Action
      • Rotates the thigh laterally; also helps abduct the thigh when it is flexed
      • Innervation
      • Nerve to the obturator internus (L5, S1)
      • Arterial Supply
      • Internal pudendal and superior and inferior gluteal arteries

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