Interobserver and intraobserver variability of glenoid track measurements
Interobserver and intraobserver variability of glenoid track measurements
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DOI：
10.1016/j.jse.2016.09.058
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发表时间：
2017-04-01
影响因子：
3
通讯作者：
Evans, Matthew C.
中科院分区：
文献类型：
--
作者：
Schneider, Adrian K.;Hoy, Gregory A.;Evans, Matthew C.
背景：最近发表了一种评估外伤性肩部不稳定中肩关节和肱骨联合丢失的方法和相关治疗方案。本研究的目的是探讨其可靠性和可重复性。方法：71例单侧前下肩不稳患者行计算机断层扫描，获得三维图像。向4位评估者提供双关节盂窝的正面视图和肱骨头的3个视图，以确定观察者之间的可靠性。根据这些测量结果，对肩部进行治疗分类。两名观察员在1个月后重复他们的评估，以确定观察员内部的可靠性。对于每次测量，计算平均变异系数。结果：对关节盂骨丢失的评估显示观察者之间（90.1%的病例中4名观察者一致）和观察者内部（94%和96%）的一致性良好。关于在轨道上或偏离轨道的分类，观察者之间的信度很差（72%）。该测量的观察者内信度变化较小（90%和80%）。观察者之间关于治疗分类的一致性很差（65%）。Hill-Sachs病变的变异系数为19.2%，表明该测量的变异性水平较高
Background: A method of assessing combined glenoid and humeral bone loss in traumatic shoulder instability with an associated treatment protocol was recently published. The aim of this study was to investigate its reliability and reproducibility.Methods: Seventy-one patients with unilateral anteroinferior shoulder instability underwent computed tomography scans, from which 3-dimensional images were derived. En face views of both glenoid fossae and with 3 views of the humeral head were provided to 4 assessors to determine interobserver reliability. From these measurements, the shoulder was assigned a treatment classification. Two observers repeated their assessments 1 month later to determine intraobserver reliability. For each measurement, the mean coefficient of variability was calculated.Results: Assessment of glenoid bone loss showed good interobserver (4 observers agreeing in 90.1% of cases) and also good intraobserver agreement (94% and 96%). There was a poor level of interobserver reliability regarding the on-track or off-track classification (72%). Intraobserver reliability for this measurement was less variable (90% and 80%). There was a poor level of agreement between observers (65%) regarding treatment classification. The coefficient of variability for the Hill-Sachs lesion measured 19.2%, indicating a high level of variability for this measurement compared with