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Purpose <p>This study aimed to introduce a novel method for assessing intraoperative coronal alignment in posterior spinal deformity surgery and to investigate its feasibility and efficacy in preventing postoperative coronal imbalance (CIB).</p> Methods <p>All enrolled patients underwent posterior spinal deformity surgery, with dot-line method employed to evaluate coronal alignment intraoperatively. Preoperative and postoperative radiographic and clinical parameters were analyzed. Additionally, patients were divided into type A, B, and C preoperatively, and subgroup analysis was conducted to further assess the effectiveness of this new method.</p> Results <p>Of 46 patients with preoperative CIB, 16 were classified as type B and 30 as type C. The prevalence of CIB was 11.70% at the final follow-up. Preoperative main Cobb angle averaged 55.39 ± 28.22° and improved to 15.19 ± 10.65° at the final follow-up (<i>P</i> &lt; 0.05). Preoperative CBD corrected from 23.06 ± 16.77&#xa0;mm preoperatively to 18.77 ± 14.48&#xa0;mm at the final follow-up (<i>P</i> &lt; 0.05). SVA was 34.59 ± 22.66&#xa0;mm before surgery and 20.12 ± 12.21&#xa0;mm at the final follow-up (<i>P</i> &lt; 0.05). VAS score and SRS-22 score demonstrated significant improvements had at the final follow up (<i>P</i> &lt; 0.05). Subgroup analysis showed postoperative CIB in 2 patients with type A, 4 patients with type B, and 5 patients with type C.</p> Conclusion <p>Dot-line method is a viable technique for intraoperative assessment of coronal alignment in posterior spinal deformity surgery, effectively reducing and preventing postoperative CIB.</p>

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A novel technique for intraoperative coronal alignment assessment in posterior spinal deformity surgery

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年11月14日

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  • Jie Cheng,
  • Tao Xu,
  • Maierdan Maimaiti,
  • Chuanhui Xun,
  • Weibin Sheng

摘要

Purpose

This study aimed to introduce a novel method for assessing intraoperative coronal alignment in posterior spinal deformity surgery and to investigate its feasibility and efficacy in preventing postoperative coronal imbalance (CIB).

Methods

All enrolled patients underwent posterior spinal deformity surgery, with dot-line method employed to evaluate coronal alignment intraoperatively. Preoperative and postoperative radiographic and clinical parameters were analyzed. Additionally, patients were divided into type A, B, and C preoperatively, and subgroup analysis was conducted to further assess the effectiveness of this new method.

Results

Of 46 patients with preoperative CIB, 16 were classified as type B and 30 as type C. The prevalence of CIB was 11.70% at the final follow-up. Preoperative main Cobb angle averaged 55.39 ± 28.22° and improved to 15.19 ± 10.65° at the final follow-up (P < 0.05). Preoperative CBD corrected from 23.06 ± 16.77 mm preoperatively to 18.77 ± 14.48 mm at the final follow-up (P < 0.05). SVA was 34.59 ± 22.66 mm before surgery and 20.12 ± 12.21 mm at the final follow-up (P < 0.05). VAS score and SRS-22 score demonstrated significant improvements had at the final follow up (P < 0.05). Subgroup analysis showed postoperative CIB in 2 patients with type A, 4 patients with type B, and 5 patients with type C.

Conclusion

Dot-line method is a viable technique for intraoperative assessment of coronal alignment in posterior spinal deformity surgery, effectively reducing and preventing postoperative CIB.