Advanced Innovation Center for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing, China.
Beijing Key Laboratory of Rehabilitation Technical Aids for Old-Age Disability, Key Laboratory of Neuro-Functional Information and Rehabilitation Engineering of the Ministry of Civil Affairs, National Research Center for Rehabilitation Technical Aids, Beijing, China.
BMC Musculoskelet Disord. 2023 Feb 15;24(1):126. doi: 10.1186/s12891-023-06227-x.
The preoperative flexibility of the scoliotic spine is a key aspect of surgical planning, as it provides information on the rigidity of the curve, the extent of structural changes, the levels to be fused and the amount of correction. The purpose of this study was to assess whether supine flexibility can be used to predict postoperative correction in patients with adolescent idiopathic scoliosis (AIS) by determining the correlation between these two characteristics.
A total of 41 AIS patients who underwent surgical treatment between 2018 and 2020 were retrospectively enrolled for analysis. Preoperative and postoperative standing radiographs and preoperative CT images of the entire spine were collected and used to measure supine flexibility and the postoperative correction rate. T tests were used to analyse the differences in supine flexibility and postoperative correction rate between groups. Pearson's product-moment correlation analysis was performed, and regression models were established to determine the correlation between supine flexibility and postoperative correction. Thoracic curves and lumbar curves were analysed independently.
Supine flexibility was found to be significantly lower than the correction rate but showed a strong correlation with the postoperative correction rate, with r values of 0.68 for the thoracic curve group and 0.76 for the lumbar curve group. The relationship between supine flexibility and postoperative correction rate could be expressed by linear regression models.
Supine flexibility can be used to predict postoperative correction in AIS patients. In clinical practice, supine radiographs may be used in place of existing flexibility test techniques.
术前脊柱侧凸的柔韧性是手术规划的一个关键方面，因为它提供了有关曲线刚性、结构性变化程度、需要融合的水平以及矫正程度的信息。本研究旨在通过确定这两个特征之间的相关性，来评估仰卧位柔韧性是否可用于预测青少年特发性脊柱侧凸（AIS）患者的术后矫正。
回顾性纳入 2018 年至 2020 年间接受手术治疗的 41 例 AIS 患者进行分析。收集术前和术后站立位 X 线片以及整个脊柱的术前 CT 图像，用于测量仰卧位柔韧性和术后矫正率。采用 t 检验分析组间仰卧位柔韧性和术后矫正率的差异。进行 Pearson 乘积矩相关分析，并建立回归模型以确定仰卧位柔韧性与术后矫正之间的相关性。对胸弯和腰弯分别进行分析。
仰卧位柔韧性明显低于矫正率，但与术后矫正率呈强相关性，胸弯组 r 值为 0.68，腰弯组 r 值为 0.76。仰卧位柔韧性与术后矫正率之间的关系可以用线性回归模型来表示。
仰卧位柔韧性可用于预测 AIS 患者的术后矫正。在临床实践中，仰卧位 X 线片可替代现有的柔韧性测试技术。
