question: I have chronic pain in my left knee, from a workplace accident, I have managed the injury for 15 years, after having a high level Tibial Osteotomy and maintaining all my own physio rehab, I have hit a wall with the pain now too great to be relieved by Codeine and Endone, my back and core are very strong and I do not get any pain from it, but my doctor want a pain specialist tocheck my back, is t because of the break through pain I suffer from?