There are different types of fractures classified by the angle of the bone break, how it occurred, and size of the break. A fracture is a broken bone caused by abnormal force on the bone from accidents, falls, or direct blows. Symptoms include pain, swelling, bruising, deformity, and inability to use the limb. Complications can be blood loss, internal organ injuries, or growth problems in children. The body repairs fractures over months through blood clotting, cartilage formation, and replacement with new bone, but immobilization and physical therapy may be needed. First aid involves splinting, immobilizing the area, and seeking immediate medical help.