- Extends the thigh, flexes the knee and also rotates the tibia medially, especially when the knee is flexed.
- Superior lateral quadrant of the ischial tuberosity.
- Posterior surface of the medial tibial condyle.
- Tibial nerve.
Arterial Supply :
- Perforating branches of profunda femoris artery,
- Inferior gluteal artery
- and the superior muscular branches of popliteal artery