A splint is a medical device used to support and immobilize a broken or injured limb. It helps keep the affected area stable, reducing pain and preventing further injury. Splints can be made from various materials, such as wood, metal, or plastic, and are often used in emergency situations to provide immediate care before reaching a hospital. When applying a splint, it is important to ensure it fits snugly but not too tightly, as this can restrict blood flow. Splints are commonly used for injuries like fractures or sprains, and they play a crucial role in the healing process, allowing the body to recover properly.