Navarro Isis J R L, Godinho Rúbia A T, Candotti Cláudia T
Biomechanics Department, Universidade Federal do Rio Grande do Sul - UFRGS, Porto Alegre, Rio Grande do Sul, Brazil.
Biomechanics Department, Universidade Federal do Rio Grande do Sul - UFRGS, Porto Alegre, Rio Grande do Sul, Brazil.
J Manipulative Physiol Ther. 2021 Jul-Aug;44(6):497-503. doi: 10.1016/j.jmpt.2021.06.004. Epub 2021 Aug 27.
The purpose of this study was to test the validity and determine the accuracy of surface topography in relation to photogrammetry for measuring the thoracic kyphosis angle in patients with scoliosis.
This was a prospective, cross-sectional study of diagnostic accuracy that followed the guidelines recommended by the Standards for Reporting Diagnostic Accuracy. We consecutively included 51 participants aged 7 to 18 years. Exclusion criteria were surgical treatment of the spine, neurological disease, lower limb discrepancy greater than 1.5 cm, and body mass index above 29 kg/m². Each participant was evaluated using both a surface topography scan and photogrammetry in random order. The measurement obtained through photogrammetry was used as a reference in this study. For statistical purposes, Pearson's correlation test, Bland-Altman graphical analysis, and the receiver operating characteristic curve (P < .05) were performed.
The correlation between the measurements was strong and significant (r = 0.76, P < .001) with an average difference of 0.4° in the Bland-Altman analysis. The receiver operating characteristic curve area was excellent for hypokyphosis (93.4%) and good for hyperkyphosis (86.4%), both being significant (P < .005).
The agreement and strong correlation between the 2 methods indicate the validity of surface topography to measure the thoracic kyphosis angle. The surface topography provides accurate measures for the thoracic kyphosis angle with cutoff points for hypo- (33.3°) and hyperkyphosis (40.8°) for individuals with scoliosis.
本研究旨在测试表面形貌测量脊柱侧弯患者胸椎后凸角的有效性，并确定其相对于摄影测量法的准确性。
这是一项遵循《诊断准确性报告标准》推荐指南的前瞻性横断面诊断准确性研究。我们连续纳入了51名年龄在7至18岁之间的参与者。排除标准包括脊柱手术治疗、神经系统疾病、下肢长度差异大于1.5厘米以及体重指数高于29kg/m²。每位参与者均以随机顺序接受表面形貌扫描和摄影测量法评估。本研究中以通过摄影测量法获得的测量结果作为参考。为进行统计学分析，采用了Pearson相关性检验、Bland-Altman图形分析以及受试者工作特征曲线（P < 0.05）。
测量结果之间的相关性很强且具有显著性（r = 0.76，P < 0.001），在Bland-Altman分析中平均差异为0.4°。受试者工作特征曲线面积对于后凸不足情况极佳（93.4%），对于后凸过度情况良好（86.4%），两者均具有显著性（P < 0.005）。
两种方法之间的一致性和强相关性表明表面形貌测量胸椎后凸角的有效性。表面形貌为脊柱侧弯患者的胸椎后凸角提供了准确的测量值，以及后凸不足（33.3°）和后凸过度（40.8°）的截断点。
