A broken leg is a fracture, or break, of any of the four bones in the leg. Learn about symptoms, causes, diagnoses, home care, treatment, surgery, and recovery time. Seek medical help immediately if you suspect a broken leg. Treatment might involve a splint, cast, or surgery, depending on the fracture. Broken legs can take several months to heal, with... WebMD explains the various ways a leg can be broken, and how a broken leg is diagnosed and treated. Learn about the common signs, causes, and types of leg fractures, and how to treat and recover from them. Find out when to see a doctor and what complications to avoid.