A splint is a medical device used to immobilize and support a broken or injured limb. It helps to keep the affected area stable, reducing pain and preventing further injury. Splints can be made from various materials, including plastic, metal, or wood, and are often used in emergency situations or during the healing process. Splints are commonly applied to injuries such as fractures, sprains, or strains. They can be temporary, like those used in first aid, or more permanent, as seen in some orthopedic treatments. Proper application of a splint is essential for effective healing and recovery.