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. 2018 Jul 17;476(8):1603–1611. doi: 10.1097/CORR.0000000000000380

Fig. 1.

Fig. 1

List detailing radiographic parameters. Total lordosis was defined as the angle between the superior endplate of L1 and the superior endplate of S1. Proximal lordosis was defined as the angle between the superior endplate of L1 to the superior endplate of L4. Distal lordosis was defined as the angle between the superior endplate of L4 and the superior endplate of S1. Segmental lordosis was defined as the sagittal angle between the superior endplate at a given level and the superior endplate of the level below. The thoracolumbar junction was the angle between the superior endplate of T10 and the inferior endplate of L2. Cumulative lordosis was defined as the sagittal angle between the superior endplate at a given level and the superior endplate of S1. The apex of lordosis was calculated according to the tangential radiographic assessment of the lumbar lordosis method [6].