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image: Semitendinonus
Semitendinonus

Semitendinonus

 Articulations :

 Action :

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

Origin :

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

Insertion :

  • Superior aspect of medial portion of tibial shaft.

Innervation :

  • Tibial nerve.

Arterial Supply :

  • Perforating branches of profunda femoris artery,
  • Inferior gluteal artery
  • and the superior muscular branches of popliteal artery

Depth :

  • Superficial
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