First aid for broken bones. For someone who is conscious, breathing and does not have open wounds, the most important aspect of first aid treatment is to minimise movement of the fractured bone. This helps minimise pain and can also prevent further injuries caused by movement of the sharp ends of broken bone. How a fracture is immobilised depends on where the fracture is. It may be necessary to use a sling or form a splint. These techniques can be learnt from first aid courses and manuals. It's important to seek medical advice for anyone with a suspected broken bone.