汉族老年人群脊柱-骨盆X线片矢状位参数特点及序列拟合关系分析

目的通过测量我国无症状汉族老年人群的脊柱-骨盆矢状位参数，分析各参数之间的相关性以及骨盆入射角（PI）在老年人群中的变化机制，建立腰椎前凸角（LL）与PI之间的线性拟合关系。 方法运用北京大学首钢医院图像存档和通信系统对80例志愿者的全脊柱X线片进行脊柱-骨盆矢状位各参数的测量，包括PI、骨盆倾斜角（PT）、骶骨倾斜角（SS）、LL、胸椎后凸角（TK）、脊柱骶骨角（SSA）、T₉矢状位偏移角（T₉SO）、脊柱矢状位平衡（SVA）。对脊柱-骨盆各参数进行Pearson相关性分析以及线性回归建立LL与PI的线性拟合关系。 结果PI为（51.72±9.53）°，PT为（14.52±7.27）°，SS为（37.20±7.84）°，LL为（52.13±10.46）°，TK为（37.57±9.15）°，SSA为（126.72±8.21）°，T₉SO为（9.96±3.09）°，SVA为（18.62±28.15）mm。PI与SS（r=0.665，P<0.001）、PT（r=0.593，P<0.001）、LL（r=0.502，P<0.001）、SSA（r=0.513，P<0.001）、SVA（r=0.290，P=0.009）呈正相关，LL与SS（r=0.840，P<0.001）、PT（r=-0.248，P=0.026）、TK（r=0.371，P=0.001）、SSA（r=0.878，P<0.001）、SVA（r=-0.258，P=0.021）有显著相关性。LL与PI的线性拟合关系为LL=0.55×PI＋24（R²=0.252）。 结论无症状汉族老年人群的脊柱-骨盆矢状位参数之间存在显著相关性，其中PI为（51.72±9.53）°；推荐我国汉族老年人群LL与PI的线性拟合关系为LL=0.55×PI＋24，可供我国老年患者脊柱矫形手术提供策略参考。

Spinopelvic sagittal parameters and their regression analysis in an elderly Han population

ObjectiveTo analyze the correlation of spinopelvic parameters and the change mechanism of pelvic incidence angle by measuring the spinopelvic sagittal parameters of asymptomatic elderly Han people, and to establish the linear relationship between lumbar lordosis (LL) and pelvic incidence (PI). MethodsThe spinopelvic parameters of 80 volunteers were measured by global spine X-rays using the picture archiving and communication systems at Shougang Hospital of Peking University. The parameters included PI, pelvic tilt (PT), sacral slope (SS), LL, thoracic kyphosis (TK), spinosacral angle (SSA), T₉ sagittal offset (T₉SO), and sagittal vertical axis (SVA). Pearson correlation analysis of spinopelvic parameters was performed and the linear regression between LL and PI was assessed with SPSS 20.0 statistical software. ResultsPI, PT, SS, LL, TK, SSA, T₉SO, and SVA were (51.72±9.53)°, (14.52±7.27)°, (37.20±7.84)°, (52.13±10.46)°, (37.57±9.15)°, (126.72±8.21)°, (9.96±3.09)°, and (18.62±28.15) mm, respectively. PI was significantly positively correlated with SS (r=0.665, P<0.001), PT (r=0.593, P<0.001), LL (r=0.502, P<0.001), SSA (r=0.513, P<0.001), and SVA (r=0.290, P=0.009). LL was significantly correlated with SS (r=0.840, P<0.001), PT (r=-0.248, P=0.026), TK (r=0.371, P=0.001), SSA (r=0.878, P<0.001), and SVA (r=-0.258, P=0.021). The linear regression equation between LL and PI was LL=0.55×PI+ 24 (R²=0.252). ConclusionsThere are significant correlations between spinopelvic parameters in asymptomatic elderly Han people. PI is (51.72±9.53)°. The linear regression equation between LL and PI in the Chinese elderly Han population is LL=0.55×PI+ 24, which can provide a strategic reference for spinal deformity in Chinese elderly patients.