The Structure of the Hamstrings
The hamstring muscles are a muscle group located at the back of the thigh. They comprise three main muscles: the biceps femoris, the semitendinosus, and the semimembranosus.
The biceps femoris
The most lateral muscle of the hamstrings. It originates from the back of the iliac bone and the femur, and inserts onto the head of the fibula (peroneal) and the upper part of the tibia.
The semitendinosus
Located medially compared to the biceps femoris. It originates from the ischium, a part of the pelvic bone, and inserts onto the upper part of the tibia, just below the medial condyle.
The semimembranosus
Deeply situated compared to the semitendinosus. It also originates from the ischium and inserts onto the upper part of the tibia, just below the medial condyle.
The hamstrings are responsible for knee flexion, hip extension, and pelvic stabilization.
Video illustration
Main exercises
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