If you and a friend were out walking, and your friend broke their leg, you might want to attach some sort of crude splint, then leave your friend there as you walk for help. (if you have no phone or no signal)
See my other comment for my more detailed thoughts, but note that wilderness situations are a specific exception to a lot of usual rules about emergency care. (E.g. “Wilderness First Responder” is a specific type of class/certification different from normal first aid, because it deals with unusual situations where rescue is not immediately available.)
See my other comment for my more detailed thoughts, but note that wilderness situations are a specific exception to a lot of usual rules about emergency care. (E.g. “Wilderness First Responder” is a specific type of class/certification different from normal first aid, because it deals with unusual situations where rescue is not immediately available.)