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This figure shows axial CT cuts at the third lumbar vertebra level. The lines indicate how the vertebral body angle (VBa) on both sides was determined. VBa is defined as an angle of a line between the intersection of the neurocentral cartilage with the spinal canal and the most anterior aspect of the vertebral body and the coronal plane. a Immediately postoperative CT image. b Same as A, but zoomed in. c CT scans 7 months postoperatively
