Summary Sartorius Origin Anterior superior iliac spine Insertion Superior aspect of the medial surface of the tibial shaft near the tibial tuberosity (joins gracilis and semitendinosus at the pes anserinus) Action Flexes and laterally rotates the hip joint and flexes the knee Innervation Femoral nerve (L2, L3, L4) Arterial Supply Muscular branches of the femoral artery