I'm working on a story and have suddenly realised I forgot to research a fairly important plot element. Our hero has had the crap beaten out of him and was in a coma for over a month. I've done the research on head injuries, so that part is only faintly relevant to the rest of the problem. The problem is, he also had his back broken in three places (his spine is undamaged- far-fetched, I know, but not as bad as some stuff that's actually canon), along with his right leg, his left hand, and 4 ribs. Now, taking all of this into account, how long are we talking about for a hospital stay after he wakes up? And what about physical therapy? I know that he'll be convalescing for months, but I'd like to get a bit more specific.
My other question is this- in another story I have somebody damaging their vocal chords by screaming too much (at a concert- I only torture half of my characters). How long would they need to keep from talking in order to heal?