Biceps femoris muscle

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Biceps Femoris Muscle[edit | edit source]

The Biceps Femoris is a muscle of the posterior (the back) thigh. As its name implies, it has two parts, one of which (the long head) forms part of the hamstrings muscle group.

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Biceps Femoris Muscle

Anatomy[edit | edit source]

The Biceps Femoris is located in the posterior compartment of the thigh, and is part of the Hamstring muscle group. It has two heads, the long head and the short head. The long head originates from the Ischial tuberosity, and the short head originates from the Femur. Both heads join together to form a single muscle belly which is attached to the head of the Fibula.

Function[edit | edit source]

The Biceps Femoris performs knee flexion, which brings the lower leg towards the back of the thigh, and hip extension, which moves the thigh backwards. It also contributes to lateral rotation of the hip and knee.

Clinical Significance[edit | edit source]

Injury to the Biceps Femoris, like other hamstring injuries, is common in athletes, especially those involved in sports that require running and jumping. Treatment usually involves rest, ice, compression, and elevation (RICE). In severe cases, surgery may be required.

See Also[edit | edit source]

References[edit | edit source]

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Contributors: Prab R. Tumpati, MD