Internal obturator muscle
Internal obturator muscle The obturator internus and nearby muscles Coronal section of anterior part of pelvis, through the pubic arch. Seen from in front. (Obturator internus labeled at right.) Details Origin Ischiopubic ramus & obturator membrane Insertion Medial aspect of the greater trochanter Artery inferior gluteal artery Nerve Nerve to obturator internus (L5, S1, S2) Actions Abducts & laterally rotates the extended hip and abducts the flexed thigh at the hip, and stabilizes the hip during walking Identifiers Latin Musculus obturatorius internus TA A04.7.02.012 FMA 22298 Anatomical terms of muscle [edit on Wikidata] The internal obturator muscle or obturator internus muscle originates on the medial surface of the obturator membrane, the ischium near the membrane, and the rim of the pubis. It exits the pelvic cavity through the lesser sciatic foramen. The internal obturator is situated partly within the lesser pel...