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Iliacus

Region

Origin & Insertion

['Origin: Iliac fossa and crest', 'Insertion: Lesser trochanter of femur via iliopsoas tendon']

Synergistic Muscles

['Psoas major', 'Rectus femoris']

Joints

['Hip']

Primary Actions

['Hip flexion']

Nerve & Spinal Segment

Femoral nerve

Lumbar plexus; L2–L4

Interesting

Joins psoas major to form iliopsoas. [Gray’s]

Reversal of Action

Trunk flexion toward thigh

Common Dysfunctions

Anterior pelvic tilt, hip flexion tightness

How to Stretch

Lunge with posterior pelvic tilt.

Trigger Points

How to Strengthen

Marching or resistance hip flexion.

Concentric Action

Hip flexion (e.g., seated march)

Applications:

Important in gait initiation and posture control

Eccentric Action

Lower leg from hip flexed position

Isotonic Action

Marching or resisted hip flexion

Related Conditions

['Hip impingement', 'Postural dysfunction']

Isometric Action

Hold hip at 90° flexion

Exercise Ideas

['Hanging leg raise', 'Bridge march', 'Lunge to knee lift']

Related Blogs

Images

Videos

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