- published: 20 Oct 2014
- views: 15078
The term Iliopsoas refers to the combination of three muscles:
These muscles are distinct in the abdomen, but usually indistinguishable in the thigh. As such, they are usually given a common name and are referred to as the "dorsal hip muscles" or "inner hip muscles".
The Psoas major originates along the lateral surfaces of the vertebral bodies of T12 and L1-L5 and their associated intervertebral discs. The Psoas minor, which presents in only some 40 percent of the population, originates at the transverse processes of L1-L5. The Iliacus originates in the Iliac fossa of the pelvis.
Psoas major unites with iliacus at the level of the inguinal ligament and crosses the hip joint to insert on the lesser trochanter. The Psoas minor inserts at the iliopectineal arch, the thickened band at the iliac fascia which separates the muscular lacuna from the vascular lacuna. femoral nerve, L1, L2
Strongest of the hip flexors (rectus femoris, sartorius, and tensor fasciae latae), iliopsoas is important for standing, walking, and running.
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