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


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


  • Lesser trochanter of the femur


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


  • Femoral nerve and branches of the lumbar plexus

Daily uses

  • Climbing a step

How can I stretch it?

How can I strengthen it?

Hip and Groin Muscles:

More Human Muscles: