This disturbs me deeply. My mother suffers from back pain, and has gone through the mill of painkillers. About seven years ago, they put a morhine pump in her back, and that took most of the pain away for six years, and she was able to cut back on the oral meds. Unfortunately, the tube where the medicine comes from grew a cyst there, pushing against the nerves in her spine and causing loss of leg function. When it was finally found and removed, the result was lasting nerve pain shooting down her legs and permanent damage to the fuctionality of the leg. Lately, she has been considering a nerve stimulator, and it saddens me that it did not work for you. The likelyhood of it working for her as well suddenly seems slim.