Ive had disc replacement at c5,6 c6,7, my whole right side died on me, atrophied so quickly the pec tricep lat, i had nerve impingment at those levels, as im still quite young and wanted to get back into training if i recover, i went with Titanium disc replacments. I put up with it for to long, get it done asap, im still trying to recover, im 9 months post op, strengths returning but the muscle bellies arent, could be up to two years, dont wait for the atrophy to start, nerves take a long time to repair. Pain wise im a lot better, but i never really had to much pain until it was to late, it was like pain one month atrophy the next, get it sorted,