What is the best method to splint a swollen, deformed upper arm injury after a fall?

For a swollen and deformed upper arm injury, utilizing any available material to create a splint is the best option. The primary goal in this situation is to immobilize the injured area to prevent further injury and reduce pain. By improvising with available materials, such as rolled-up newspapers, sticks, or even clothing, you can effectively support the limb and limit movement.

When treating such injuries, especially when swelling and deformity are present, it's critical to stabilize the area before professional medical help arrives. While a hard board splint can be effective in many situations, it may not be easily accessible in an emergency or may require additional handling that could cause further discomfort. Applying an elastic bandage may not provide sufficient support for a severe injury and could exacerbate swelling by constricting blood flow. Waiting for professional help is not ideal in emergencies requiring immediate action to stabilize an injury. Thus, the best course of action is to use any available materials to create an effective splint, ensuring safety and comfort until further medical attention can be obtained.