(Hamstrings) Biceps Femoris: Long Head

hamstring-muscles-origin-labeledknee-model-lateral-view-labeledMuscle Origin

Ischial tuberosity to head of fibula and lateral condyle of tibia.

Common tendon with semitendinosus from superior medial quadrant of the posterior portion of the ischial tuberosity.

Insertion

The main attachment is to the styloid process of the fibula, forming a semicircle around the lateral collateral ligament. The remainder splits into three laminae: the intermediate lamina fuses with the lateral fibular collateral ligament, the others pass superficial and deep to the ligament to attach to the lateral condyle of the tibia. The Wellness Digest

Action

Flexes lower leg at knee.

Flexes knee joint, laterally rotates knee joint, extends hip joint.

Innervation – Nerve control

Tibial portion of the sciatic nerve (L5,S1).

Artery

Deep femoral artery, perforating arteries.

The deep femoral artery travels down the thigh closer to the femur than the femoral artery, while the perforating arteries are three arteries that branch from the deep artery of the thigh as it descends anterior to the adductor brevis muscle.

Antagonist muscles

Quadriceps muscle.

The quadriceps are a large muscle group that includes the four muscles on the front of the thigh, and it is the great extensor muscle of the knee.

Pictures of muscles

 

Trigger Point Referrals

 

Stretching description

 

Exercises

 

Injuries

 

Treatment

 

Additional Resources
Wiki
American Academy of Manual Medicine
University of Washington, Department of Radiology
The Wellness Digest

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