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Distribution of radiographical parameters preoperatively, at 3 months postoperatively and 12 months postoperatively. Absolute values are depicted, except from PI-LL, where the difference between the parameters is visualized. Abbreviations: PI: Pelvic Incidence, PT: Pelvic Tilt, SS: Sacral Slope, LL: Lumbar Lordosis, LDI: Lordosis distribution index.
