obturator externus muscle

(redirected from Obturator externus)

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.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
References in periodicals archive ?
The obturator externus bursa is a potential space located between the obturator externus tendon and the ischiofemoral capsular ligaments at the posterior aspect of the hip joint capsule.
Gross anatomy observation: The trunk of the obturator nerve passes through the obturator externus muscle about 3 cm inferiolaterally to the pubic tubercle and divides into anterior and posterior branches, both of which travel superficial (anterior branch) and deep (posterior branch) to the adductor brevis muscle.
The anterior and posterior branches of the obturator nerve, or the common obturator nerve, run between the pectineus and obturator externus muscles immediately after the nerve emerges from the obturator canal (Figure 1(a)).
We present a previously unreported case of acute obturator internus and Obturator externus strain in an adolescent.
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.
Once placed, the ends of the mesh penetrate the obturator membrane and obturator externus but not the adductor compartment of the thigh and groin.
Quadratus femoris (QF), piriformis, obturator internus, obturator externus, and superior and inferior gemelli are the deep external rotator muscles of the hip joint (Fig).
There was herniation of a bowel loop of length 3.5 cm through left obturator foramen extending inferiorly between pectineus muscle anteriorly and obturator externus muscle posteriorly, suggestive of obturator hernia (Figures 3, 4(a), and 4(b)).
After preparation of the space between the anteroinferior capsule and the psoas tendon, the ischium is approached proximal to the obturator externus muscle.
The fascia from the obturator externus and adductor magnus muscles was removed without damaging the branches of the obturator nerve.
The gluteals (maximus, medius, and minimus) and the "deep six" muscles of the hip (piriformis, quadratus femoris, obturator internus, obturator externus, gemellus superior, and gemellus inferior) serve to flex, extend, abduct, adduct, and medially or laterally rotate the hip.
The gemelli muscles, together with piriformis, obturator internus, obturator externus and quadratus femoris, are deep muscles of the hip joint.