Hi, my SI rotates causing my pelvic floor to also rotate . . . kind of like ringing a towel. This then causes my lumbar vertebrae to twist, and if I pick up something heavy, my lumbar disc bulges shooting pain down the back of my leg. I finally found a pelvic floor physical therapist. . . they are not easy to find. My Gynecologist told me about one, and my Physiatrist who did nerve root injections to calm the nerve which was pressed by the bulging disc confirmed this PT was the best. I would start with trying to find a PT specializing in pelvic floor . . Who is in private practice, not a franchise PT group. The best ones start their own practices and truly want you to get better. My rotation is caused by a bad foot surgery years ago. I can't "walk off" my right foot, thus causing a gait disturbance. One thing affects all the muscles in your back and up to shoulders. Good luck.