SEMITENDINOSUS

Semitendinosus muscle

Origin of Semitendinosus

From common tendon with long head of biceps femoris from superior medial quadrant of the posterior portion of the ischial tuberosity.

Insertion of Semitendinosus

Superior aspect of medial portion of tibial shaft.

Muscle Action/Function of Semitendinosus

Extends the thigh and flexes the knee, and also rotates the tibia medially, especially when the knee is flexed.

Arterial (Blood) Supply of Semitendinosus

Perforating branches of profunda femoris artery, inferior gluteal artery, and the superior muscular branches of popliteal artery.

Semitendinosus Video

Semitendinosus - Muscles of the Hip and Thigh

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