Biceps femoris muscle

Last revised by Assoc Prof Craig Hacking on 05 Jun 2021

The biceps femoris is one of the large muscles in the posterior compartment of the thigh and a component of the hamstrings. It has a long and a short head, each with different functions and innervation.

Its medial border forms the superolateral border of the popliteal fossa.

Summary

Variant anatomy

  • absence of the short head 2
  • exclusive tibial insertion (rare) 3

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Cases and figures

  • Figure 1
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  • Figure 2
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  • Figure 3
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  • Case 1: biceps femoris - partial tear
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