A fracture is a broken bone that can occur in different ways and types. The document discusses four types of fractures: oblique fractures which occur at an angle to the bone, compound fractures where the bone breaks through the skin, spiral fractures where the bone is twisted apart, and comminuted fractures where the bone is broken into multiple pieces. Treatment depends on the severity but may include casts, surgery to realign bones, or internal fixation with pins and rods.