growth over nerve damage

Hi Everyone! I hope you are all enjoying your holidays/festive season and looking forward to the New Year! This is my first post and I do not even know if I am posting this in the right place? I am sure someone will kindly tell me if I have and show me where this post/questions should go...

Some nerve damage in my shoulders caused some serious muscle atrophy in my upper body. I want to regain some of that muscle, but was told the nerve damage wold prevent growth? any advice?