I went on a bow hunt with a buddy of mine that has a degenerative shoulder joint. He obtained a letter from his Doctor and went down to the Fish and Game and was issued a waiver allowing him to hunt with a crossbow. I don’t know much about crossbows but what I can tell you is that his arrow flew a heck of a lot faster than my bow that I have set at 70 pounds.
The bad thing is that in order to de-cock the crossbow you have to shoot the arrow. You can’t just let it off (as far as I know). He also had to have it knocked up all the time too which could lead to an AD if you’re not careful.