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Biceps Femoris - Long Head

Last updated on Saturday, June 20 2009 by blondarb

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Muscle Name: biceps femoris - long head

AKA:  musculus biceps femoris longus

Abbreviation: BF-LH

Spinal Nerve Roots:
    lumbosacral plexus

Named Nerves:
    sciatic nerve (tibial division)

Proximal Attachment:  ischial tuberosity and lenea aspera of the femur

Distal Attachment:  the head of the fibula

Action: Flexion of the knee joint, extension of the hip joint. It also externally rotates the leg when the knee is bent.

Needle Insertion: In the distal third of a line between the ischial tuberosity and the head of the fibular bone.

Activation for EMG:  The patient flexes their knee.



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