Fig. 4From: Complications rate of and risk factors for the unplanned reoperation of degenerative lumbar spondylolisthesis in elderly patients: a retrospective single-Centre cohort study of 33 patientsL4 DLS in a patient treated with L5 laminectomy and posterolateral fusion. (a, b) Postoperative X-ray was normal. c The X-ray showed screw displacement and fracture at the 36-month follow-upBack to article page