NCIt definition : A striated muscle covering the majority of the lateral wall of the pelvis, with its
origin on the ischiopubic ramus and obturator membrane and insertion on the greater
trochanter, which functions to externally rotate the hip.;
Alternative definition : CDISC: A muscle of the pelvis that originates on the ischiopubic ramus and obturator
membrane and inserts on the greater trochanter.;