The first part of splinting is immobilizing the moving parts. It's always best to immobilize the next joint up from the injury, if possible. If a foot appears to be broken, splint up to the ankle. If an ankle seems sprained, splint up to the knee. If the knee is tweaked, splint up to the hip. Padding is another chief concern. Ample padding helps to stabilize the injury and it also provides pressure to keep swelling in check. Wrap the limb or joint in any bandages or padding that you have available. For the stiff part of the splint, you'll need to find some bark strips, sticks, or other rigid material. Don't allow any hollow spots under the rigid splint material. Tape or tie them around the splint padding on the injured limb. Make sure that you don't tie the splint or any of the wrappings so tight that you cut off circulation. Once you're done with the splint, it's time to think about a crutch.