A fracture is a partially or completely broken bone. Fractures are common and occur when a bone cannot withstand physical force. There are different types of fractures including greenstick, simple, and compound. Fractures can be caused by direct force, abnormal muscle contraction, indirect force, or a diseased bone. Signs of a fracture include exposed or deformed bone, swelling, and redness. Symptoms include pain, bruising, swelling, deformity, inability to use the injured area, numbness. First aid management includes preventing movement, calling for assistance, immobilizing the injured area, and splinting if needed until medical help arrives.