The fracture end is embedded in the other end of the fracture, mainly seen in the epiphysis, 4, green branch fracture, the fracture appears but not completely broken, mainly seen in adolescents, because the bones of adolescents are more elastic, 5, compression fracture, mainly seen in the vertebral body, in the location of the thoracolumbar segment is easy to appear, 6, avulsion fracture, due to excessive force, the attachment point of the ligament tendon, will tear off a small part of the bone fragment.