两种测量方法在成年女性冠状面形体测量中的Bland-Altman一致性评价

Consistancy of two measurements in coronary-plane posture measurement of adult women by bland-altman analysis

目的探讨女性冠状面形态参数在脊柱全长X片与智能三维体态评估系评估的一致性。方法2021年10月至2022年7月北京大学人民医院招募144例女性于妇科进行形体评估为受试对象。使用正位全脊柱X片作为冠状位肩膀平衡角(clavicle angle,CA)、脊柱侧弯Cobb角(Cobb)及骨盆平衡角(pelvic obliquity,PO)测量的金标准,再使用智能三维体态评估系统对CA、Cobb及PO角进行测量。使用Bland-Altman方法评价两种方法的一致性。结果CA、Cobb及PO角的差值均值分别为-0.2、0.2及0.2,95%的点均在临床可接受的一致性界值内,一致性良好。结论智能三维体态评估系统在冠状面脊柱角度的测量可以在一定程度上替代X线片作为测量方法。

Objective To investigate the consistency of the evaluation of the posture parameters of coronal plane in the full spine X-ray and the intelligent three-dimensional posture evaluation system.Methods 144 participants were evaluated in the Gynecology Clinic of the People's Hospital of Peking University.The anterior full spine X-ray was used as the gold standard for the measurement of clavic angle(CA),scoliosis Cobb angle(Cobb)and pelvic obliquity(PO)in coronal plane.The intelligent three-dimensional posture evaluation system was used to measure CA,Cobb and PO angles again.The Bland-Altman method was used to evaluate the consistency of the two methods.Results For CA,Cobb,and PO angle,the mean value of difference was-0.2,0.2 and 0.2.The parameters were all within 95%of the clinically acceptable consistency threshold,with good consistency.Conclusion The results of CA,Cobb,and PO angle in coronal plane by the intelligent three-dimensional posture evaluation system,were consistent with the result of spine X-ray.