Diagram

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Biceps Femoris Muscle (Long Head)

The long head of biceps femoris muscle originates from the lower end of the ischium to cross the front of the knee and insert on the tibia and fibula. As the name implies, the biceps femoris has two heads, or immovable ends, one attached to the ischium (bone in the pelvis) and the other attached to the femur (thigh bone). The muscle passes along the back of the thigh on the lateral side and connects Continue Scrolling To Read More Below...

Continued From Above... close to the midline ends of the fibula and tibia (bones in the lower leg). The biceps femoris is one of the hamstring muscles, and its tendon (hamstring) can be felt as a ridge behind the knee. This muscle functions to flex and rotate the leg laterally and to extend the thigh.