Iliacus Muscle

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

Overview

Iliacus
Muscle Origin Insertion Innervation Action
Iliacus
  • [Iliac Fossa](/The Archive/Anatomy/Skeletal Muscles/Lower limb muscles/Iliopsoas muscles/iliacus_muscle.qmd#origin) [@gilroyAtlasAnatomy2020]
  • [Lesser Trochanter](/The Archive/Anatomy/Skeletal Muscles/Lower limb muscles/Iliopsoas muscles/iliacus_muscle.qmd#insertion) [@gilroyAtlasAnatomy2020]


L2 - L31

  • [Femoral n.](/The Archive/Anatomy/Skeletal Muscles/Lower limb muscles/Iliopsoas muscles/iliacus_muscle.qmd#nerve) [@gilroyAtlasAnatomy2020]

[L2](/The Archive/Anatomy/Skeletal Muscles/Lower limb muscles/Iliopsoas muscles/iliacus_muscle.qmd#nerve) - [L3](/The Archive/Anatomy/Skeletal Muscles/Lower limb muscles/Iliopsoas muscles/iliacus_muscle.qmd#nerve) [@gilroyAtlasAnatomy2020]

 Hip

  • [Flexion](/The Archive/Anatomy/Skeletal Muscles/Lower limb muscles/Iliopsoas muscles/iliacus_muscle.qmd#action) [@gilroyAtlasAnatomy2020]
  • [ER](/The Archive/Anatomy/Skeletal Muscles/Lower limb muscles/Iliopsoas muscles/iliacus_muscle.qmd#action) [@gilroyAtlasAnatomy2020]

L/S (BIL contraction)

  • [Raises trunk from supine position](/The Archive/Anatomy/Skeletal Muscles/Lower limb muscles/Iliopsoas muscles/iliacus_muscle.qmd#action) [@gilroyAtlasAnatomy2020]

L/S (UNIL contraction on fixed femur)

  • [I/L spine sidebend](/The Archive/Anatomy/Skeletal Muscles/Lower limb muscles/Iliopsoas muscles/iliacus_muscle.qmd#action) [@gilroyAtlasAnatomy2020]

Origin

Iliac fossa

Insertion

Femur (lesser trochanter)

Innervation

Femoral N. (L2, L3)1

Action

  • Hip joint: flexion and external rotation
  • L/S: unilateral contraction (with the femur fixed) flexes the trunk laterally to the same side; bilateral contraction raises the trunk from the supine position

Overview

Stretches

References

1.
Gilroy AM, MacPherson BR, Wikenheiser JC, Voll MM, Wesker K, Schünke M, eds. Atlas of Anatomy. 4th ed. Thieme; 2020.

Citation

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