Fig. 3

Result of osteotomy through the fracture gap in the female patient with ankylosing spondylitis. a, b Photographs show satisfactory correction achieved via osteotomy through the pathological fracture gap. c Radiograph shows stable internal fixation (without displacement) and corrected kyphosis. d Radiograph at follow-up after 1 year shows the closed fracture gap and stable bone fusion achieved at the posterior column