Fig. 1From: Standalone oblique lateral interbody fusion vs. combined with percutaneous pedicle screw in spondylolisthesisRadiological measurements (CT and X ray) used in this study. a Sagittal computed tomography (CT) image of lumbar vertebrae. The red line shows the foraminal height (FH). The yellow line shows the foraminal width (FW). b Sagittal CT image of lumbar vertebrae. The red line shows the anterior disc height (ADH), (c) Sagittal CT image of lumbar vertebrae. The red line shows the posterior disc height (PDH), (d) Lateral X-ray image of lumbar vertebrae. The red line shows the FW. e Lateral X-ray image of lumbar vertebrae. The red line shows the FH. f Lateral X-ray image of lumbar vertebrae. The red line shows the ADH. The yellow line shows the PDHBack to article page