Measuring flexion in knee arthroplasty patients
Measuring flexion in knee arthroplasty patients
复制标题
DOI：
10.1016/j.arth.2003.12.001
复制
发表时间：
2004-04-01
影响因子：
3.5
通讯作者：
Askew, MJ
中科院分区：
文献类型：
--
作者：
Edwards, JZ;Greene, KA;Askew, MJ
全膝关节置换术后的膝关节屈曲可以通过目测估计，用靠着患者腿部放置的测角器测量，或通过屈曲膝关节的侧位X线片测量。三名检查者以盲法估计了16例患者27个膝关节的最大膝关节屈曲度，并用测角器测量了屈曲度。然后拍摄膝关节侧位X线片，并通过2种不同的方法从X线片测量屈曲角。尽管观察者间和观察者内相关系数很高（0.79和0.92），但45%的视觉估计值和22%的测角器测量值与放射学测量值相差5度或更大。这些差异随着屈曲角度的增加而增加。体重指数不影响估计或测角器测量的准确性。
Flexion following total knee arthroplasty can be visually estimated, measured with a goniometer placed against the patient's leg, or measured from a lateral radiograph of the flexed knee. Three examiners, in a blinded fashion, estimated the degree of maximal knee flexion and measured the flexion with a goniometer for 27 knees in 16 patients. A lateral knee radiograph then was taken and the flexion angle was measured from the radiograph by 2 different methods. Although interobserver and intraobserver correlation coefficients were high (0.79 and 0.92), 45% of the visual estimates and 22% of the goniometer measurements differed by 5degrees or greater from the radiographic measurements. These differences increased as the flexion angle increased. Body mass index did not affect the accuracy of the estimates or goniometer measurements.