This is one of the major causes of lower back pain. In both men & woman the pubic bone can shift. Without the pubic bone in alignment the hips, even if adjusted, will not stay in place until the pubic bone is in place. On a woman the pubic symphysis naturally separates during the birthing process. From a fall or accident the pubic symphysis can get displaced and stuck and is therefore unable to move apart during the birthing process which in many cases is the reason for cesarean births. Adjusting the PSIS joint (Posterior Superior Iliac Spine) and pubic bone is a must for complete back relief.