Fig. 3From: Factors associated with non-fusion after direct pars repair of lumbar spondylolysis with pedicle screw and lamina hook: a clinical and CT-assessed studyPreoperative lumbar spine X-rays of a 15-year-old female diagnosed with L5 spondylolysis (A, B). Sagittal and axial CT images showing the defects in the pars interarticular (C, D). Postoperative lumbar spine x-rays showing the pedicle screw- rod-laminar hook system (E, F)Back to article page