perforated appendix.
A perforated appendix irritates the obturator muscle, producing pain.
The medial surface of a obturator membrane, that is ischium next to the membrane, and the border of the pubis are where the internal obturator muscle, also known as the obturator internus muscle, originates.
Through the smaller sciatic foramen, it leaves the pelvic cavity. The internal obturator is located at the rear of the hip joint and partially inside the smaller pelvis. In addition to stabilizing the femoral head in the acetabulum, it helps the femur laterally rotate with hip extension and abduct with hip flexion.
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