That’s terrible news and predicament !
It sounds like he’s a strong hard worker, and tough. Take it from me if he’s determined he will recover fully and be his old self again!
Take it from someone from the same mold. 2 broken backs and a broken neck with 2 cervex inserts ( instead of fusion) and still going at it at 62.
Whatever he does do not let them do any fusions of his vertebrae . I had to fight and had the right doctor. Fusion is just the first step to a straight rod for a spine with no mobility.
Best of luck to him and the whole family. If you need a spinal MD who is second to none I can send you in the right direction. Dr Anthony Salerni is the Dr other Drs go to to have work done on them personally. Prayers!!