With the aggravation of osteoporosis, the bones may become locally compressed and painful, and even fractures of different degrees may occur under the action of slight external forces. The fracture sites are mainly in the spine (11th and 12th thoracic vertebrae and 3rd lumbar vertebrae), the neck of the femur and distal radius, and the spine, which is deformed and shortened due to wedge-shaped compression fractures. Shortening of the thoracic spine may be accompanied by chest discomfort and pulmonary dysfunction, and symptoms such as abdominal distension and constipation. So what are the auxiliary tests for shortening of bone deformation? Here is a brief introduction. Bone imaging and bone density 1, taking X-rays of the lesion site: X-rays can detect fractures as well as other lesions, such as osteoarthritis, intervertebral disc disease, and anterior displacement of the spine. Bone loss (low bone density) can be seen on radiographs with increased bone translucency, reduced bone trabeculae and widened gaps, loss of transverse trabeculae, and blurred bone structure, but this is usually observed only when the bone volume has decreased by more than 30%. The biconcave deformation of the vertebral body and the collapse of the anterior edge of the vertebral body in a wedge shape are also known as compression fractures, which are commonly seen in the 11th and 12th thoracic vertebrae and the 1st and 2nd lumbar vertebrae. 2.Bone density test: bone density test is a predictor of fracture. The measurement of bone density at any site can be used to assess the overall risk of fracture; the measurement of bone density at specific sites can predict the risk of local fracture occurrence.