Fig. 1From: Posterior column osteotomy plus unilateral cage strutting for correction of lumbosacral fractional curve in degenerative lumbar scoliosisSchematic diagram of measured coronal and sagittal spinal parameters, including coronal balance distance, Cobb’s angle, lumbosacral coronal angle (a), sagittal vertical axis, lumbar lordosis, lumbosacral lordotic angle (b)Back to article page