if its any consolation, ill share this story.
my friend cased a table last year at a big air comp and hurt himself critically. he was put into a coma by doctors, and this is the best thing for him. with the rest of his body shut down, his brain focused on repairing itself, because he had recieved severe brain trauma. he started out at a rating of 4 on the glasgow coma scale. getting a 4 means that you have scored the lowest possible mark on all of the tests (visual, auditory, and motor) and he was not in a good position. being in a coma helped him put all his energy to repairing himself. and as we speak, almost a year later, my friend is back in school, and 100% mentally recovered, and almost fully physically recovered. i heard story after story about people who were almost clinically dead, and then made a full recovery. i witnessed this, and i know that someone as stong as CR could pull it off as well