Besides the Dr telling you (he hasn't yet I see him on the 14th) how do you know you have a failed fusion. I am getting scared that this has happened to me. I was great for 7 or 8 months now some of my pain is back if I overdue it a little (and the doctor said I had no restricitons) I am in pain for days. I was just wondering if anyone out there with a failed fusion can guide me to what I should be looking for.....I guess I am tired of being in pain and grasping at straws. The surgeon did send me for a myelogram (in November) and he still has not told me the results I will see him on the 14th hopefully I will know something. I would just hate to have gone through all of this and then have it fail!!!