obturator internus muscle

(redirected from internal obturator muscle)
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ob·tu·ra·tor in·ter·nus mus·cle

(ob'tŭr-ā-tŏr in-ter'nŭs mŭs'ĕl)
Origin, pelvic surface of obturator membrane and margin of obturator foramen; insertion, passes out of pelvis through lesser sciatic foramen, in so doing, making a 90° turn to insert into the medial surface of greater trochanter; action, rotates thigh laterally; nerve supply, nerve to obturator internus (sacral plexus).
Synonym(s): musculus obturatorius internus [TA] , internal obturator muscle.
References in periodicals archive ?
The internal obturator muscle was elevated and sutured medially and laterally by coccygeus and levator ani muscles using mattress pattern 1-0 polypropylene sutures followed by subcutanelous sutures using polygalactin 910.
Perineal hernia repair in the dog by transposition of the internal obturator muscle.
In herniorrhaphy when the internal obturator muscle flap is weak, the technique with polypropylene mesh can be used as the first choice (Vnuk et al.
The Perigee Prolapse Repair System (American Medical Systems), the Gynecare Prolift Total, Anterior and Posterior Pelvic Floor Repair System (Ethicon), and the Avaulta Plus Biosynthetic Support System - Anterior (Bard Urological) all use a transobturator approach and use the ileococcygeus muscle and the internal obturator muscles as their anchor points, he said.
A set of 2 specific needles are used to pass through the skin incision and then rotated to perforate the obturator membrane along with its both external and internal obturator muscles and keeping close contact with the bone, turns around the ischiococcygeus ramus.
Then palpate the pubococcygeal, transverse perineal, and internal obturator muscles.

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