Fig. 3From: Should adjacent asymptomatic lumbar disc herniation of L5-S1 isthmic spondylolisthesis be simultaneously rectified? Evaluation of postoperative spino-pelvic sagittal balance and functional outcomesPlain lateral radiographs for measuring spino-pelvic sagittal parameters. LL: Lumbar lordosis, SS: Sacral slope, PI: Pelvic incidence, PT: Pelvic tiltBack to article page