Zhao, Y.; Shu, J.; Qi, L.; Yang, C.; Xu, B.; Yu, Z.; Li, C. Clinical Outcomes of S2 Alar-Iliac Screw Technique in the Treatment of Severe Spinal Sagittal Imbalance: A Retrospective 2-Year Follow-up Study. Int J Res Orthop 2022, 8, 415-421.