Computed tomography-derived assessment of respiratory impairment in thoracic scoliosis: Comparison between idiopathic and non-idiopathic etiologies

Figure 4 Comparison of spinal deformity and computed tomography-derived respiratory parameters between idiopathic and non-idiopathic scoliosis. A: Cobb angle; B: Predicted total lung capacity percentage (TLC%); C: Minimum diameter at the narrowest tracheal segment. Data are presented as violin plots with overlaid box-and-whisker plots and individual data points. Patients with non-idiopathic scoliosis showed significantly larger Cobb angles, lower TLC%, and smaller airway diameters. The dashed horizontal line in panel B indicates a TLC% of 80%. Group comparisons were performed using the Wilcoxon rank-sum test. TLC%: Predicted total lung capacity percentage.