obturator externus muscle


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ob·tu·ra·tor ex·ter·nus mus·cle

(ob-tū-rā'tōr eks-ter'nŭs mŭs'ĕl)
Origin, lower half of margin of obturator foramen and adjacent part of external surface of obturator membrane; insertion, trochanteric fossa of greater trochanter; action, rotates thigh laterally; nerve supply, obturator.
Synonym(s): musculus obturatorius externus [TA] , external obturator muscle.
References in periodicals archive ?
It passes through the following structures in the following order: gracilis, adductor brevis muscle, obturator externus muscle, obturator membrane, and beneath or through the obturator internus muscle and periurethral endopelvic connective tissue; it finally exits through the opened vagina.
After preparation of the space between the anteroinferior capsule and the psoas tendon, the ischium is approached proximal to the obturator externus muscle.
However, the first ischial cut can be easily performed prior to repositioning through the lateral incision, between the inferior gemellus and obturator externus muscles, with optimal visual control of the sciatic nerve.