Omeroglu H, Tumer Y, Bicimoglu A, Agus H
Osmangazi University Hospital, Eskisehir, Turkey.
Bull Hosp Jt Dis. 1999;58(4):194-6.
This study evaluates the intraobserver and interobserver reliability of the Kalamchi and MacEwen's classification system of avascular necrosis of the femoral head. Radiographs of 48 developmentally dysplastic hips that had an average follow-up of 40.5 months (range: 36 to 52 months) and that had been treated by the same operative technique were interpreted twice by four experienced pediatric orthopaedic surgeons. When the absence or presence of avascular necrosis was taken into consideration the average intraobserver agreement percentage and kappa coefficient were 86% and 0.71, respectively. The average interobserver agreement percentage and kappa coefficient were 83% and 0.66, respectively. When the agreement on the type of avascular necrosis was analyzed, the average intraobserver agreement percentage and kappa coefficient were 85% and 0.74, respectively. The average interobserver agreement percentage and kappa coefficient were 81% and 0.66, respectively. No statistically significant difference was found between the rates of avascular necrosis of four observers. The Kalamchi and MacEwen's classification system was found to be reliable and reproducible.
本研究评估了卡拉姆奇（Kalamchi）和麦克尤恩（MacEwen）股骨头缺血性坏死分类系统的观察者内及观察者间可靠性。对48例发育性髋关节发育不良患者的X线片进行分析，这些患者平均随访40.5个月（范围：36至52个月），且采用相同的手术技术进行治疗。由四名经验丰富的小儿骨科医生对这些X线片进行两次解读。当考虑股骨头缺血性坏死的有无时，观察者内一致性百分比平均值和kappa系数分别为86%和0.71。观察者间一致性百分比平均值和kappa系数分别为83%和0.66。当分析股骨头缺血性坏死类型的一致性时，观察者内一致性百分比平均值和kappa系数分别为85%和0.74。观察者间一致性百分比平均值和kappa系数分别为81%和0.66。四名观察者的股骨头缺血性坏死发生率之间未发现统计学显著差异。发现卡拉姆奇和麦克尤恩的分类系统具有可靠性和可重复性。
