Long head from common tendon with semitendinosus from superior medial quadrant of the posterior portion of the ischial tuberosity; short head from lateral lip of linea aspera, lateral supracondylar ridge of femur, and lateral intermuscular septum of thigh
Insertion
Primarily on fibular head; also on lateral collateral ligament and lateral tibial condyle
Action
Flexes the knee, and also rotates the tibia laterally; long head also extends the hip joint
Innervation
Long head by tibial nerve; short head by common peroneal nerve
Arterial Supply
Perforating branches of profunda femoris artery, inferior gluteal artery, and the superior muscular branches of popliteal artery
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