I feel your pain my brother. I mutilated all the fingers of one hand in a table saw. I know there are no muscles in there because I looked. lol
Rehab on hands is long and painful. Lots of nerve endings in there and they are complex little buggers. I had 2 years of physical therapy for mine and now have about 60%. On the plus side, I’m not going to worry too much about nicking a nerve 
