I had a total hip replacement when I was only 32. No orthopedic doctor could find why? Rescently I fractured my left leg. I had to go see a Medical Podometrist. From him looking over the x-rays, he said I did have nerve damage but basically what I had was a VERY SERIOUR CIRCULATION PROBLEM. Now I know why needed a hip replacement at such a young age. My blood wasn't flowing enough to feed the bone from my blood. I was diagnosed though by my Orthopedic Joint Replacement Surgeon as having Avasucular Necrosis. Which is basically what I said above. Now all I have to do is find a Circulatory Doctor to treat my symptoms.