The iliopsoas is a complex of three different muscles: the iliacus, the psoas major and the psoas minor. Generally speaking, the psoas arises from the lower spine and the iliac fossa (part of the pelvic girdle), and attaches to the anteromedial aspect of the femur (lesser trochanter). The primary function of this muscle group is hip flexion. Secondary functions include hip rotation and stabilization of the pelvis and spine. Psoas syndrome is a generic term used to refer to a musculoskeletal disorder affecting the iliopsoas and surrounding tissues, including conditions often described as iliopsoas bursitis, hip snapping, impingement and tendinopathy. This condition is more common in patients who take part in activities that place significant stress on the anterior pelvis and hip region through repetitive hip flexion and extension movements (e.g. kicking, sprinting, dancing, etc.). Although this syndrome is more common in the sporting population, it can also develop in the general population. Patients with this condition generally report pain in the anterior and medial part of the hip, often associated with functional activities requiring flexion of the hip joint (walking, running, kicking, etc.).