A bone fracture is a break or crack in the bone that is common, with most people experiencing at least one in their lifetime. Fractures are usually caused by trauma from falls, accidents, violence or disease. Symptoms include swelling, bruising, pain when touched or moved, and deformity of the limb. Fractures are diagnosed through physical examination, x-rays, and other imaging tests like CT scans or MRI. Treatment depends on factors like age, health history, fracture type and location, ranging from immobilization for minor fractures to surgery for severe, open or infected fractures involving internal devices like plates or grafts.