And their definitions a fracture in which the broken bone does not pierce the skin A fracture in which the bone is sticking through the skin. An avulsion fracture is a bone fracture which occurs when a fragment of bone tears away from the main mass of bone as a result of physical trauma. Orbital blowout fractures are cracks or breaks in the facial bones surrounding the eye. A fracture in which bone is broken, splintered or crushed into a number of pieces. A fracture caused by compression, the act of pressing together. Compression fractures of the vertebrae are especially common with osteoporosis. Fracture of the skull where the bone is pushed in. A fracture involving the epiphyseal or growth plate of a long bone, which causes separation or fragmentation of the plate. A greenstick fracture is a fracture in a young, soft bone in which the bone bends and partially breaks. A fracture that follows the long axis of the bone. A fracture that is diagonal to a bone's long axis. A pathologic fracture is a broken bone caused by disease, often by the spread of a disease like cancer to the bone. Enchondroma Cysts A fracture where at least one part of the bone has been twisted. A stress fracture is one type of incomplete fracture in bones, caused by unusual or repeated stress. A fracture that is at a right angle to the bone's long axis.