T_(1)倾斜角与C_(7)倾斜角多因素分组相关性分析

Multivariate correlation analysis of T_(1)S and C_(7)S

目的:通过T_(1)倾斜角(T_(1) slope,T_(1)S)与C_(7)倾斜角(C_(7) slope,C_(7)S)相关性分析,探讨C_(7)S是否可替代T_(1)S。方法:以2015年7月至2020年7月门诊和住院的442例颈椎疾患患者为观察对象,筛选出能识别T_(1)上终板患者259例,男145例,女114例,其中颈椎手术患者163例,门诊非手术患者96例,年龄20~83(58.6±11.2)岁。将筛选对象按性别、年龄、颈椎是否后凸、颈椎序列是否失衡、颈椎是否手术进行分组,其中男性组145例,女性组114例;青年组76例(<40岁),中年组109例(40~60岁),老年组74例(>60岁);颈椎后凸组92例,非后凸组167例;颈椎序列失衡组51例,非失衡组208例;颈椎手术组163例,非手术组96例。依次分析各种形式分组T_(1)S与C_(7)S相关性。结果:442例患者T_(1)上终板可见者259例(58.6%),C_(7)上终板可见者401例(90.7%)。上述259例患者T_(1)S平均值为(24.5±8.7)°,其中男性组(25.9±7.7)°,女性组(23.7±6.9)°;C_(7)S平均值(20.8±7.3)°,其中男性组(22.5±7.5)°,女性组(19.7±5.8)°。T_(1)S与C_(7)S总相关系数r=0.89,复相关系数R^(2)=0.79,线性回归方程为T_(1)S=0.91×C_(7)S+4.35。在上述一般资料和畸形各因素分组中,T_(1)S与C_(7)S均具有高度相关性(r值为0.85~0.92,P<0.05)。结论:不同因素分组中T_(1)S与C_(7)S具有高度相关性,对于无法测得T_(1)S的病例,可使用C_(7)S取代T_(1)S,为评估脊柱矢状面平衡,分析病情以及制定手术方案提供指导和参考。

Objective To determine whether C_(7) angles(C_(7) slope,C_(7)S)could replace T_(1) angles(T_(1) slope,T_(1)S)by correlation analysis of T_(1)S and C_(7)S.Methods A total of 442 patients from July 2015 to July 2020 in outpatient and inpatient department were enrolled retrospectively,and 259 patients who could identify the upper endplate of T_(1) were screened out.Of them,there were 145 males and 114 females,aged from 20 to 83 years old with an average of(58.6±11.2)years,including 163 patients with cervical spine surgery and 96 non-surgical patients.Patients were stratified by sex,age,cervical kyphosis,cervical alignment imbalance,and cervical spine surgery.These 259 patients included 145 cases in the male group,114 cases in the female group;76 cases in the youth group(<40 years old),109 cases in the middle-aged group(40 to 60 years old),and 74 cases in the elderly group(>60 years old);92 cases in the cervical kyphosis group,167 cases in the non-kyphosis group;51 cases in the cervical sequence imbalance group,208 cases in the non-imbalance group;163 cases in the cervical surgery group,96 cases in the non-operation group.The correlations of C7S and T1S in various modalities groups were analyzed.Results Of 442 patients,the recognition rate of upper endplate of T1 was 58.6%(259/442),and that of C7 was 90.7%.The mean T1S and C7S of the 259 patients were(24.5±8.0)°[(25.9±7.7)°in the male group and(23.7±6.9)°in the female group]and(20.8±7.3)°[(22.5±7.5)°in the male group and(19.7±5.8)°in the female group],respectively.The total correlation coefficient between C_(7)S and T_(1)S was r=0.89,R^(2)=0.79,and the linear regression equation was T_(1)S=0.91×C_(7)S+4.35.In the above general information and the grouping of deformity factors,T_(1)S was highly correlated with C_(7)S(r value 0.85 to 0.92,P<0.05).Conclusion There is a high correlation between T_(1)S and C_(7)S in different factor groups.For cases where T_(1)S cannot be measured,C_(7)S can be used to provide guidance and reference for evaluating the sagittal balance of the spine,analyzing the condition,and formulating surgical plans.