| Objective：To study the correlation of trunk inclination angle (ATI) with Cobb angle and coronal plane balance in patients with idiopathic scoliosis of single thoracic and lumbar spine, so as to provide theoretical basis for clarifying the relationship between spinal deformation and trunk deformity. Methods: In the early stage of scoliosis screening, 40 patients who met the requirements were selected, including 5 males and 35 females. Scoliometer was used to measure the ATI of the patients. On the spine X-ray films performed less than one month ahead of the study, the Cobb angle, offset between central sacral vertical line (CSVL) and C7 vertebra plumb line (C7PL) (C7PL-CSVL), and apex vertebral translocation (AVT) were measured, and the correlation between ATI and Cobb angle, and between C7PL-CSVL and AVT was analyzed. Results: It was found that there was a significant correlation between ATI angle and Cobb angle (r=0.702, P=0.000), and the increase of ATI angle could indicate the increase of Cobb angle. This correlation was applicable to patients with AIS with single thoracic lumbar curvature. There was no significant difference between ATI angle and C7PL-CSVL (r=0.294, P=0.065). There was a correlation between ATI angle and AVT (r=0.499, P=0.001). The ATI angle was related to the partial imbalance of the coronal plane of the spine. Conclusion: In patients with single thoracolumbar AIS, the apparent deformity of the trunk can reflect the deformity of the spine. In the diagnosis and treatment of AIS patients, ATI angle can be used as an evaluation index to quantify and monitor the deformity of trunk appearance. |
