I have the same thing happened to me my body has completely fused all the way around the disc but I am being told that and is not possible to have in a reaction to these implants because they are Cobalt chromium although they do contain nickel and other Trace metal alloys they don't mention that though. The surgeon also told me that there are no allergy receptors in your spinal canal therefore although I have metal allergies it's not possible to have a metal allergic reaction to an implanted device because those receptors are only found on the skin. I know all of that information is inaccurate the community here is so small that all of the surgeons know each other although I refuse to speak bad about the surgeon and I will not even mention his name I tell them it's not important because I do not want anybody to assume that I am stating he was a bad surgeon or did a bad job therefore I just don't say his name but it hasn't helped me at all I have literally deteriorated my spine is now collapsing on top of each other and deteriorating that was 34 years old when I fell and I had an amazing life now I can't even work and I've lost my home and I can't get these people to understand that I need this disc removed immediately I've been fired by almost every one of my providers and nobody helps me these implant should be illegal..