I have a large herniated disc L5S1 my back feels fine and I am going to pilates once a week and a chiropractor twice a week. But the biggest problem I am having is my piriformis muscle. I can't walk more than 100 yards without it going into spasm. I have asked my chiropractor if its piriformis syndrome but she says it is all coming from my herniation. So I was wondering has any body else had this problem and what they found that worked?