Zhao, Yao, Jianchuan Shu, Longtao Qi, Chengxian Yang, Beiyu Xu, Zhengrong Yu, and Chunde Li. 2022. “Clinical Outcomes of S2 Alar-Iliac Screw Technique in the Treatment of Severe Spinal Sagittal Imbalance: A Retrospective 2-Year Follow-up Study”. International Journal of Research in Orthopaedics 8 (4):415-21. https://doi.org/10.18203/issn.2455-4510.IntJResOrthop20221617.