gemellus muscle


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gemellus muscle

Either of the two muscles that attach to the medial surface of the greater trochanter of the femur (the trochanteric fossa) where they mesh with the tendon of the obturator internus muscle. The superior gemellus muscle arises from the ischial spine and is innervated by the nerve to the obturator internus; the inferior arises from the ischial tuberosity and is innervated by the femoral nerve. Both muscles hold the head of the femur in the acetabulum, rotate (laterally) the thigh in extension, and abduct the thigh when it is flexed.
See also: muscle
References in periodicals archive ?
Absence of superior gemellus muscle in American Whites and Negroes.
obturator internus muscle tendon almost immediately forms after leaving the pelvis, joining the superior and inferior gemellus muscles. These three muscles form a joint tendon that is inserted into the medial face of the greater trochanter of femur (Ito et al.; Tamaki et al., 2014).