Can I recommend a book? Maybe this is as silly as all those people who come into the grammar communities and recommend Eats, Shoots & Leaves. If everyone already knows about it, I apologize for the spam.
The book is called Body Trauma: A Writer's Guide to Wounds and Injuries, by David W. Page. It has information on bone breaks, internal injuries, hypothermia, heatstroke, drowning, animal bites, and first aid, surgery, and hospital care (among other things). Anyone who writes in a 'realistic' fandom where there isn't any healing magic or super-special alien regenerative powers needs to read this.