ACTION: hip hiker, side bender
REFERRAL:sacro-iliac joiont, lateral hip, gluteal area.
COMMENTS: The quadratus lumborum is a well known muscle that is a primary cause of lower back pain. Its action of bringing the hip up is important for balancing postural distortion. Not only does it refer into the Sacro-Iliac joint, but can cause stress in that joint by pulling the hips out of alignment.