Hello, I was in an auto accident when I was 19 years old, it was found that I had os odontoid missing and needed to have fusion of c1 c2 using bone from my hip. they wired it together and I had a halo on for 4 months. Well here I am 20 years later with severe headaches and neck pain. I have been to every doctor and am not getting anywere. Going to a pain clinic and have had 3 steroid injections into my neck and has not done anything - no relief. I am desperate, and I cannot seem to locate anybody that has had this so long ago like me. I think I may have cervicalogenic headaches? I just cannot get no relief.