Lumbar 1 vertebral wedge fracture is caused by compression fracture in young people, and in older people it is caused by degenerative changes of the vertebral body due to severe osteoporosis, but of course it can also be caused by a relatively minor external injury. The severity of the fracture depends on how much of the original vertebral body is involved. If the fracture does not exceed 1/3 of the vertebral body height, it is relatively mild and conservative treatment can be considered in young people. Surgery is recommended for more than 1/3 of the vertebral body, and even more serious for more than 1/2 of the vertebral body, which may lead to compression of the nerves in the vertebral canal. For the elderly, this lesion is more serious, because this kind of fracture needs to stay in bed for a long time, and may cause complications such as pneumonia, urinary tract infection, bedsores, etc, which may lead to the death of the patient in case of serious complications.