Results: Revision surgeries were performed in nine patients with a mean time to revision of 21.9 years after the initial surgery. Postoperative radiological parameters before revision surgeries or at last follow-up, including pelvic tilt, lumbar lordosis, sagittal vertical axis, coronal balance, L3 and L4 tilt, and apical vertebral translation were 32.0°, 22.1°, 11.3 mm, 37.7 mm, 14.4°, 18.2°and 42.1 mm in patients with revision surgeries and 19.7°, 43.6°, 0.8 mm, 4.7 mm, 8.0°, 8.3°and 24.7 mm in those without revision surgeries, respectively, with statistical differences (P < 0.05).