Biceps Femoris Long Head

Authors

Affiliations

Nathaniel Yomogida, B.S., SPT

Doctor of Physical Therapy

B.S. in Kinesiology

Chloë Kerstein, B.S., SPT

Doctor of Physical Therapy

B.A. in Neuroscience

Muscle	Origin	Insertion	Innervation	Action
Biceps femoris long head	Ischial tuberosity Sacrotuberous lig. (Common head with semitendinosus)	Fibular head	Tibial n. L5 - S2	Hip: Extension Knee: Flexion, ER Pelvis: Sagittal stabilization

Origin

• Ischial tuberosity¹
• Sacrotuberous lig.¹
• Note: (common head with Semitendinosus)¹

Insertion

Head of Fibula¹

Innervation

Tibial N. (Tibial division of Sciatic N.) (L5, S1, S2)¹

Action

• Hip: Extends the hip¹
• Pelvic Stabilization: Sagittal plane¹
• Knee: Flexion and ER¹

References

1.

Gilroy AM, MacPherson BR, Wikenheiser JC, Voll MM, Wesker K, Schünke M, eds. Atlas of Anatomy. 4th ed. Thieme; 2020.