Hi my name is Sue and I had a c5 -6 radical anterior fusion with instrumentation back in 10/2011 and now 2 years later and after many visits for follow-up with my neurosurgeon as recent as July 2013 I was told my fusion had healed just fine, However a few short months later I started to experience numbness in my fingers, hands and radiating pain down my left arm along with partial paralysis and extreme pain in my neck, I just recently found out the c5-6 fusion has collapsed and did not fuse at all. Now I m being told this is rare and is most likely due to an allergic reaction to Titanium? is this true ? and would this cause the bone chips to disintegrate? Please help..