this whole story is pretty sad man. you can no longer fight. but you can still do bodybuilding stuff right??maybe imwrong
you can still do
bench (if your rotaters get better)
sholder raises
bicep curls
triceps
shrugs
ax chops for the lats on a pully
legs extensions
leg curls
it seems like there still is alot you can do even though you have a back injury. just see if u can work around it. it seems like none of these excersises should effect your back munch. you would just have to stay away from heavy sholder presses deads and squats.
but i dont know what u can do, it just seems like you could do these excersises withought worrying about your back because things like curls and bench presses and the others ive listed
good luck man and dont count yourself out. hopefully you arent out totally
keep that positive mindset like youve always had. and maybe you should consider prayer, but i dont know how you feel about that. but hell what have you got too loose, prayer will work, its worked for me in the most fucked up situations, give it time and give it faith.