Has anyone ever had two interbody grafts (cages) fail to fuse? I had my first surgery April 2007. Continued to have pain and MRI revealed failed fusion at L4. I had L5, S1 fused using ALIF, L4 was fused using a cage, which failed. I had surgery again in April 2008. The surgeon removed the cage and replaced it and he also added two screws to help stabilize. Well, I started experiencing the same pain again. I had another MRI, which revealed the same problem. For some reason my spine refuses to fuse. I started taking Lyrica 3 weeks ago. It really helps with the pain, but I am concerned. The neuro didn't really address what to do about it. He said that since the meds are helping that he didn't want to operate again. He suggested that I wait a few months and then have another MRI taken to see if there are any changes. I go back in 6 weeks. What do I need to ask?