Fig. 1From: Letter to the editor: efficacy of OLIF combined with pedicle screw internal fixation for lumbar spinal stenosis on spinal canal changes before and after surgeryDH (the disk height) change on DR and CSAVC (the cross-sectional area of vertebral canal) change on MRI. A A plot of significant change in height on DR preoperative, 1Â month postoperative, and 1Â year postoperative after DH and B a plot of significant change in the area on MRI preoperative, 1Â month postoperative, and 1Â year postoperative after CSAVCBack to article page