Obturator externus muscle

Dr Geon Oh et al.

The obturator externus is a flat, triangular muscle, which covers the outer surface of the anterior wall of the pelvis.


  • origin: external surface of obturator membrane and adjacent bone (inferior pubic ramus and the ramus of the ischium)
  • insertion: trochanteric fossa of femur
  • action: laterally rotates thigh at the hip
  • arterial supplyobturator artery
  • innervationobturator nerve
Anatomy: Lower limb
Share article

Article information

rID: 44364
Section: Anatomy
Synonyms or Alternate Spellings:

Support Radiopaedia and see fewer ads

Updating… Please wait.

Alert accept

Error Unable to process the form. Check for errors and try again.

Alert accept Thank you for updating your details.