Glenn, you spoke of one leg being shorter than the other. I have scoliosis, and always had a lot of back pain. While going for therapy after knee surgery, my therapist suggested I wear a heel lift to bring my pelvis level. That was 4 years ago, and it has worked for the back pain. My daughter-in-law also has scoliosis and back pain, and she now uses a heel lift to get relief. (I even have one in my slippers) Joan