Brage M E, Bennett C R, Whitehurst J B, Getty P J, Toledano A
University of Chicago Hospitals and Clinics, Illinois 60637, USA.
Foot Ankle Int. 1997 Jun;18(6):324-9. doi: 10.1177/107110079701800602.
We analyzed 50 sets of ankle radiographs to determine the interobserver and intraobserver reliability when obtaining common linear and angular measurements. The radiographs were divided into two groups: one group included 25 normal ankles, and the second group included 25 fractured ankles. Each set of radiographs was evaluated independently by four different observers on two separate occasions under controlled conditions. Six radiographic parameters were measured on all 50 sets of films: syndesmosis A, syndesmosis B, syndesmosis C, the medial clear space, and the talocrural and bimalleolar angles. On the 25 sets of fracture films, four additional measurements of fracture displacement were included: displacement of the medial malleolus (mortise), displacement of the lateral malleolus (AP and lateral), and displacement of the posterior malleolus. Reliability was evaluated with an analysis of variance intraclass correlation coefficient. Among the examiners, 9 of the 10 parameters could be measured reliably. Intraobserver reliability was found to increase with the experience of the examiner.
我们分析了50组踝关节X光片，以确定在获取常见的线性和角度测量值时，观察者间和观察者内的可靠性。X光片被分为两组：一组包括25个正常踝关节，另一组包括25个骨折踝关节。每组X光片由四名不同的观察者在受控条件下于两个不同时间独立评估。在所有50组胶片上测量了六个放射学参数：下胫腓联合A、下胫腓联合B、下胫腓联合C、内侧间隙以及胫距和双踝角度。在25组骨折胶片上，还包括四项额外的骨折移位测量：内踝（关节窝）移位、外踝（前后位和侧位）移位以及后踝移位。通过方差分析组内相关系数评估可靠性。在检查者中，10个参数中的9个可以可靠测量。发现观察者内可靠性随检查者经验的增加而提高。
