obturator externus muscle

(redirected from external obturator 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 ?
A triangular region bordered by the superior pubic ramus, posterior margin of the pectineus muscle and anterior aspect of the external obturator muscle containing the obturator vessels and nerve was defined and later used clinically to perform obturator nerve block with ultrasound guidance.
2) Within this tunnel, the nerve divides into two main branches, as well as a branch to the external obturator muscle.

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