I had initial cervical fusion app.6 years ago and another one 4 years ago because I was told that the first one didn't fuse even though xray after the first surgery said it was fused. Both times with cadaver bone although the second time the dr. also put in a titanium plate and screws. Now, 4 years later, I'm having constant neck pain...severe. MRI and cervical xray suspicious for nonunion again. Dr. wants to do a bone scan to find out. Is this protocol and if it is pseudoarthrosis, what is the next step? I'm sick and tired of being sick and tired!! I started smoking about 1 year ago...I'm sure this added to my problem. I would appreciate any comments and suggestions anyone has.