Not only has my RSD spread from my rt foot and ankle to my lt foot and ankle, but it's moved up my rt leg to my knee and thigh, and also up my lt leg almost up to my knee. There's no rhyhme or reason to when or if my so-called "good" left leg is sudden going to stop working. I've decided to undergo the trial of SCS, even though I have a history of things in/on/around my spine not working. I'm almost a year into this mess now, so if it's going to work -- now is the time. Best of luck to you. Word Up!