I've always known that I have walked on the outside of my feet, but I never knew it was the cause of my knee, hip and back pain. Dr. Gibson watched the way that I walked, told me which quadrasteps I needed and the difference was almost immediate. I've finally been able to start running again without any pain. I tried not wearing them one day to see if they trully were making a difference and the amount of pain I was in at the end of the day was proof that they do work! For anyone who has joint pain in their ankles, knees, hips or back I would reccomend having Dr. Gibson analyze how you walk. Also use either the quadrasteps or custom orthotics, they are amazing nd I haven't been able to do this much in a long time.-Julia L.