Biceps femoris
Origin: Long head — Ischial tuberosity Short Head — Linea asperaInsertion: Head of fibula and lateral condyle of tibiaAction: Flexes knee; Extends and laterally rotates thigh
The biceps femoris is a muscle located in the back of the thigh. It is one of the three muscles that make up the hamstring group, alongside the semitendinosus and semimembranosus muscles. The biceps femoris is further divided into two parts: the long head and the short head.
The long head of the biceps femoris originates from the ischial tuberosity, which is a bony protrusion at the base of the pelvis. The short head of the biceps femoris originates from the linea aspera, which is a bony ridge on the femur bone in the thigh. Both heads of the muscle converge and attach to the head of the fibula and the lateral condyle of the tibia bones in the lower leg.
The biceps femoris is responsible for several actions, including flexion of the knee joint, extension of the hip joint, and lateral rotation of the thigh. It is particularly important in activities such as running, jumping, and kicking, where it plays a key role in controlling the movement of the lower leg.
Injuries to the biceps femoris are common, particularly in athletes who engage in high-intensity activities such as football, soccer, or track and field. These injuries can range from mild strains to more severe tears, and can take several weeks to heal with rest and rehabilitation exercises. Stretching and strengthening exercises can help prevent injury to the biceps femoris and other muscles in the hamstring group.
More Answers:
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The Importance of Tibialis Anterior Muscle for Lower Limb Function and How to Strengthen and Prevent Injuries