Iliopsoas group

Definition

The iliopsoas group consists of two major muscles, the iliacus and psoas major, that are key flexors of the thigh at the hip joint. These muscles originate from the lower spine and pelvis and insert into the femur (thighbone).

Related terms

Hip flexion: The action of moving your thigh or top part of your leg forwards or upwards towards your abdomen.

Psoas Major:

A large muscle that extends from the lumbar region of the spine to the femur and is one of the two muscles making up the iliopsoas group.

Iliacus:

A flat triangular muscle that fills the iliac fossa in the pelvis, part of the iliopsoas group, working together with psoas major to flex and rotate the hip