髌骨轴位摄影角度与胫股角相关性回归方程的临床应用评价

目的探讨髌骨轴位摄影角度与胫股角相关性回归方程的临床应用价值。方法 100例患者分为两组,根据回归方程设计制作用于测量胫股角和选择摄影角度的角度测量板。实验组(n=50),按照角度测量板测量的胫股角和对应的摄影角度进行髌骨轴位摄影,测量髌股关节显示情况;对照组(n=50)对以往的髌骨轴位影像的髌股关节显示情况进行测量。测量髌骨轴位影像的髌骨后缘双边线间距。统计对照组和实验组的髌骨后缘双边线间距的均值,采用两独立样本t检验,评价两组均值是否存在统计学差异;按髌骨后缘双边线间距的大小统计两组的髌骨轴位影像的优、良、中、差等级百分比。结果对照组和实验组的髌骨后缘双边线间距的均值分别为(1.82+1.23)mm,(0.99+0.94)mm。对两组数据行两独立样本t检验,经Levene’s方差齐性检验,F=5.04,P=0.03,两组总体方差不齐,采用近似t检验t,=3.81,P=0.00,两总体均数的统计学存在显著性差异,实验组的髌骨后缘双边线间距比对照组要小。对照组和实验组的髌骨轴位影像的优、良、中、差等级百分比分别为14(28%)、15(30%)、14(28%)、7(14%);27(54%)、16(32%)、5(10%)、2(4%)。结论髌骨轴位摄影角度与胫股角相关性回归方程Y=60+0.6X可作为髌骨轴位摄影的角度选择方程。根据回归方程制作的髌骨轴位摄影角度测量板可准确确定摄影角度,方便、实用。

Correlation between patellar axial angle and tibiofemoral angle photography:a clinical evaluation with regression equation

Objective To study the correlation between patellar axial angle and tibiofemoral angle photography and to evaluate its clinical significance.Methods The angular measuring plate was fabricated by the regression equation designed to measure the tibiofemoral angle and choice of camera angles.A hundred patients were divided into experimental group(n=50) and control group(n=50) based on use or non-use regression equation.The former underwent patellar axial angle photography according to tibiofemoral angle measur...