I urge you to consider all your options before having more surgery. Can you try PT and cortisone shots? What about a brace or mobility aids ie-scooter? Could another type of surgery bring you any relief, perhaps less invasive? Get a second opinion if possible. I had my fourth knee surgery this spring which triggered RSD. They gave me a femoral nerve block before starting. I had complications and wouldn't do one again. Plus I went home after with no feeling. When it wore off I was home, it was in the afternoon and the pain came on like a Mac truck. The doctor's office was closing and when I called, they said it was too late to come in, I'd have to go to the ER or else wait till morning. $100 later I went to the ER only to get a few hours of minor relief from a shot.

Take your time making this decision. Explore you options. Discuss your concerns with your doctor. Best wishes and good luck. You will be in my prayers.