Magical healing? Spoilers
The kid's mashed up leg seemed to come good very quickly - I guess searing it with a red hot knife is the required remedy for infection and snapped bone alike (adept with a crutch a few days later, why not?).
And Wild Bill's shovel-foot never seemed to be an issue for him, though it sure looked like the sort of wound that would have one off that foot for at least a few months - and that's today, let alone back then.