Fig. 2

Preoperative and postoperative images obtained in a 19-year-old man with L5 spondylolysis. a–c Preoperative radiographs, CT scan and MRI. d One-week postoperative radiographs. e 9-Month follow-up CT scan. f 15-Month radiographs showed that the lumbar instrumentations had been removed. g–h 15-Month postoperative CT scan and MRI