A month ago, my surgeon told me I was losing muscle tone and that I had developed adjacent segment disease from my ACDF and corpectomy in 2012, so I would require another surgery this summer, an artificial disc replacement this time. So I noticed a week ago that my right arm (my dominant arm) is atrophying, there is about a 1 inch difference alone in the bicep between the left and the right. Is this reversible with surgery? I've read varying things, so I was hoping someone on spine-heath has had experience with it. I am only 33 years old and wondering how this will effect my career, which can sometimes require physical labor like taking biological samples from rivers or hiking long distances while carrying sampling equipment.