, are three: hamstring, semimembranous and semitendinosus.
With the exception of the short head of the hamstring, these muscles are all bi-articular: in fact, they surmount the hip and knee joints, and contribute to the movement of these.
The hamstrings are mainly involved in knee flexion and hip extension; however, under specific conditions, they can also participate in the rotational movements of the aforementioned joints.
Furthermore, these muscles provide for the stability of the pelvis, the retroversion movement of the latter and stabilization of the knee.
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With the exception of the short head of the hamstring, these muscles are all bi-articular: in fact, they surmount the hip and knee joints, and contribute to the movement of these.
The hamstrings are mainly involved in knee flexion and hip extension; however, under specific conditions, they can also participate in the rotational movements of the aforementioned joints.
Furthermore, these muscles provide for the stability of the pelvis, the retroversion movement of the latter and stabilization of the knee.
