The last thing you'd want in a survival situation is probably one of the more likely things to happen. An injury that would require you to splint a limb will definitely slow you down and hamper your efforts to make it out alive if you don't take care of it. In this 30 second short, we teach you how to properly splint a limb. It might save you from further injury and the eventual downfall that comes with it.
So you're out alone or with a group of folks and something horrible has happened. You're far away from civilization and medical care. Either you or someone in your group has a broken or sprained limb. This, obviously would make it difficult for the injured party to maintain the pace with the rest of the group or get moving at all. A simple splint could help that person move with less pain or at least stabilize the injury so it doesn't become worse. It's an extremely simple medical practice that can make all the difference in the world.
In this instance, we are splinting a broken arm, but the same principles apply to any limb that you'll need to apply a splint too. We're using a moldable ready-made splint, however, any straight-ish sticks that you can find will work as well. You'll want to make sure whatever material you use is long enough to fully support the limb. After placing the splint, use gauze to secure the splint in place. Take care to wrap securely but not super tight. That would cut off circulation and potentially be a very bad day. Remember it's not a tourniquet.
With the arm splinted, you're free to walk and move around with little fear of further injury. You've also greatly increased the chances that the injury will heal properly. What seems like a minor issue in normal everyday life is amplified when those luxuries are removed.