The Hip: Preservation, Replacement and Revision

Obturator Externus


       the margin of bone immediately around the medial side of the obturator foramen, from the rami of the pubis and the inferior ramus of the ischium;
Insertion: posterior aspect of the greater trochanter;
Action: External Rotation of femur at the hip; (see external rotators)
Synergists: Periformis, Gemellus Superior, Gemellus Inferior, Obturator Internus, Quadratus Femoris; 
Nerve Supply: Sacral plexus, L5, S1, S2; (See Innervation) 
    note: the nerve to the obturator externus travels thru the Greater Sciatic foramen

Isolated obturator externus muscle abscess presenting as hip pain.

Primary obturator externus pyomyositis in a child presenting as hip pain: a case report

Original Text by Clifford R. Wheeless, III, MD.

Last updated by Data Trace Staff on Thursday, December 15, 2011 11:15 am