Analysis of the change and influencing factors of cervical sagittal curvature in adolescent idiopathic scoliosis patients
Chinese Journal of Clinical Anatomy ›› 2015, Vol. 33 ›› Issue (6) : 712-716.
Analysis of the change and influencing factors of cervical sagittal curvature in adolescent idiopathic scoliosis patients
Objective Summarize the radiographic data of 48 patients with adolescent idiopathic scoliosis (AIS) to analyze the characteristics and influencing factors of cervical sagittal alignment in AIS patients. Methods For AIS patients, The angle of the main thoracic curve (TC), the proximal thoracic curve (PTC), the thoracolumbar curve (TLC), and the lumbar curve (LC), C2~7 Cobb angle, T5~12 Cobb angle, L1~5 Cobb angle, pelvic incidence (PI), pelvic tilt (PT), sacrum slop (SS), C2~7 sagittal vertical axis (C2~7 SVA), C7~S1 sagittal vertical axis (C7~S1 SVA) were included in radiographic measurements. In addition, the C2~7 Cobb angle was measured for the young volunteers. Lenke classification was used for AIS curve type classification. Pearson correlation coefficients and T-test were used for statistical analysis. Results The incidence of cervical deformity,cervical kyphosis and cervical imbalance was 75.0%, 47.9 and 10.4% respectively. The C2~7 Cobb angle of AIS patients significantly increased than the volunteers (P=0.008). In the cervical kyphosis group, T5~12 Cobb angle was significantly lower than that of the normal group (P=0.011). The C2~7 Cobb angle of the T5~12 Cobb angle＞30°group increased significantly than the T5~12 Cobb angle≤30°group(P=0.021).The C2~7 Cobb angle was significantly correlated with T5~12 Cobb angle (P=0.009) and L1~5 Cobb angle(P=0.005). There was no significant relevance between C2~7 Cobb angle and TC，PTC，TLC，LC，Lenke Curve Type，PI，PT，SS，C7~S1 SVA（P＞0.05). Conclusion The cervical sagittal alignment is only related with TK and LL, especially with TK. It has no relationship with Lenke curve type, coronal angle of thoracic and lumbar spine, and pelvic parameters(PI，PT，SS).
Adolescent Idiopathic Scoliosis / Cervical Curvature / Sagittal Alignment
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