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Origin Common tendon with semitendinosus from superior medial quadrant of the posterior portion of the ischial tuberosity
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 Tibial nerve (L5, S1, S2)
Arterial Supply Perforating branches of profunda femoris artery, inferior gluteal artery, and the superior muscular branches of popliteal artery






 

 

 

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