Anatomical function: The Psoas Majorjoins the upper body and the lower body (the spine to the femur),
the axial to the appendicular skeleton, the inside to the outside, and the back to the front. As part of the iliopsoas, psoas major contributes to flexion in the hip joint.”
Tango Function: Flexes the hips to show intention toward and away from the Mark. For the Revel, the Psoas prepares the base leg for all projections.