Biceps Femoris: Difference between revisions
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=== Actions === | === Actions === | ||
*Long head: flexes the knee, extends hip, laterally rotates | |||
*Short head: flexes the knee, laterally rotates | *Long head: flexes the knee, extends hip, laterally rotates lower leg when knee slightly flexed, assists in lateral rotation of the thigh when hip extended | ||
*Short head: flexes the knee, laterally rotates lower leg when knee slightly flexed | |||
=== Functional contributions === | === Functional contributions === | ||
Revision as of 01:38, 8 May 2015
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Description[edit | edit source]
Biceps femoris is a muscle of the posterior thigh and part of the hamstrings muscle group.
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Anatomy[edit | edit source]
Origin[edit | edit source]
- Long head: ischial tuberosity
- Short head: linea aspera and lateral supracondylar line of the femur
Insertion[edit | edit source]
- Lateral aspect of fibular head
Nerve Supply[edit | edit source]
- Long head: sciatic nerve (tibial division, L5-S2)
- Short head: sciatic nerve (common peroneal division)
Blood Supply[edit | edit source]
- Perforating branches of profunda femoris, inferior gluteal, and medial circumflex femoral arteries
Function[edit | edit source]
Actions[edit | edit source]
- Long head: flexes the knee, extends hip, laterally rotates lower leg when knee slightly flexed, assists in lateral rotation of the thigh when hip extended
- Short head: flexes the knee, laterally rotates lower leg when knee slightly flexed
Functional contributions[edit | edit source]
Techniques[edit | edit source]
Palpation[edit | edit source]
Length Tension Testing / Stretching[edit | edit source]
Trigger Point Referral Pattern[edit | edit source]
- Pain referred from TrPs in the lower half of the biceps femoris (long or short head) focuses on the back of the knee and may extend up the posterolateral area of the thigh as far as the crease of the buttock.
Recent Related Research (from Pubmed)[edit | edit source]
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Resources[edit | edit source]
References[edit | edit source]
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