• Jae-Young Hong, Keon-Woo Kim, Seung-Woo Suh, Si-Young Park, and Jae-Hyuk Yang.
• *Department of Orthopedics, Korea University Ansan Hospital †Department of Orthopedics, Korea University Guro Hospital ‡Department of Orthopedics, Korea University Anam Hospital, Seoul, South Korea.
• J Spinal Disord Tech. 2017 May 1; 30 (4): E418-E422.

Study DesignA radiographic analysis with scoliosis patients.ObjectivesTo analyze correlations between sagittal spinal alignment and coronal scoliotic curvature.Summary Of Background DataSagittal spinal alignment and scoliosis may have a significant relationship, and schematic analysis is needed.MethodsThe study group was comprised of 163 patients with adolescent idiopathic scoliosis. Subjects underwent anteroposterior and lateral radiographs of the whole spine including hip joints. The radiographic parameters used were magnitude, location and direction of curve, thoracic kyphosis, thoracolumbar kyphosis, lumbar lordosis, sagittal balance, sacral slope, and pelvic angle. Subjects were classified into 4 groups according to the severity of coronal curvature: Cobb angle ≤20 degrees, Cobb angle 21-40 degrees, Cobb angle 41-60 degrees, and Cobb angle >60 degrees. In addition, subjects were divided into 4 subgroups according to Roussouly's classification (types 1-4) of sagittal spinal shape. Schematic analysis was performed to determine the relationship between coronal and sagittal parameters.ResultsAnalysis of parameters with severity of coronal curvature, thoracic kyphosis, and sacral slope were significantly higher in high-grade scoliosis (P<0.05). However, the pelvic angle was higher in low-grade scoliosis, and sagittal balance showed a significantly higher positive value in low-grade scoliosis (P<0.05). In the analysis of sagittal spinal shapes, Roussouly groups 3 and 4 showed more severe scoliosis with higher lumbar lordosis and thoracic kyphosis (P<0.05). In addition, Roussouly group 1 demonstrated a significantly higher incidence of low-grade scoliosis, whereas groups 3 and 4 had a higher incidence of high-degree scoliosis by cross-relation analysis (P<0.05).ConclusionsA significant relationship exists between sagittal spinal shape and coronal curvature in scoliosis. Understanding the biplanar shapes of scoliosis may be helpful to the surgeons.

21 keywords...

hide…