I am contemplating c 4-5 fusion. any advice would be great. I have severe pain in my neck and bad headaches. also shooting pain in my left shoulder and arm, spasams and numbness in arm and hand. Have yet to find a non-narc that touches the pain. problem is that c 3-4 and 5-6 are messes up also but dr. feels 4-5 is the cause. any help would be great, thanks.