I was suffering badly with muscle pain in my left hip and buttock. Walking more than a few yards was painful. I had a total knee replacement on the opposit side six months before. The orthopaedic surgeon who did my knee showed little interest in my pain as in his opinion my new knee was perfect! I was prescribed stronger painkillers and physiotherapy neither of which helped. I happened to mention how I was suffering to my podiatrist on a routine visit. He simply measured the length of both legs and discovered a discrepancy in their length. He placed a wedge under the insole of of my left shoes.....that small change in my gait cured my pain! Sometimes we look for complicated treatments when something simple is the answer! Hope this is helpful!