Fig. 2

a-c: Preoperative lumber and thoracic X-ray images. Scalloping in some vertebrae was observed, as indicated by arrowheads on a lateral view of the lumbar X-ray. On thoracic spine X-ray there were no findings of DISH such as more than three successive bone bridges, and there were no anterior or posterior osteophytes with a biconcave appearance such as Erdheim spondylosis in the thoracic spine