Iliopsoas

Iliopsoas
Iliopsoas is sometimes classified as two muscles, Iliacus and Psoas major, with Iliacus arising from the Ilium and Psoas from the vertebrae. 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. Example stretches - Hip flexor stretch. Example strengthening exercises - Isometric hip flexion. Standing hip flexion with a resistance band. Original article and pictures take http://www.sportsinjuryclinic.net/anatomy/human-muscles/iliopsoas site