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Iliopsoas

Iliopsoas is sometimes classified as two muscles, Iliacus and Psoas major.

Origin

• Inner surface of the Ilium
• Base of the sacrum
• Sides of the bodies of T12-L5

Insertion

• Lesser trochanter of the femur

Actions

• Flexion of the hip
• Lateral rotation of the hip
• Flexes torso when the legs are fixed (e.g. laying to sitting)

Innervation

• Femoral nerve and branches of the lumbar plexus

Daily uses

• Climbing a step

How can I stretch it?

• Hip flexor stretch

How can I strengthen it?

• Hip flexion using a resistance band
• Sitting hip flexion using a resistance band
• Wall sit
• Straight leg raise