I am a 55 year old male with degenerative disc disease. I have had a fusion of the L4, L5, and S1 with a cage. I have also had a neuro stimulator implanted in my spine. I have sever pain in my left hip, it feels like there is grinding going on in there but the specialist says there is nothing wrong with the hip. I have frequent muscle spasms. Sometimes when walking, my left leg stops working and it spins me around. The neurologist says there is nothing wrong. I am currently going to a pain clinic and am taking buprenorphine. Any thoughts as to what may be causing the grinding feeling in the hip or why my leg quits working. I don t know what to try next or who to go to for more help.