Hope you go for second opinion on C5-6. One question to ask is how the verterbre are above this site and below it. This is very important, any hardware you have put in, will put strain on those above and below. Your other verterbre need to be in good shape. Also Not every doctor insists on EMG. I got away with not having one. The second opinion said it was not necessary for dianostics in every case. Try to seperate carpel tunnel, address neck first if at all possible. I was fused C6-7. that failed, wound up with C3-7 and that did ok. Still not in good shape however, above and below.
I do wish you all the best as you go forward. I know you are afraid. It is scarry, but you can get through this. Neuro Talk will be here for you every step of the way. ginnie