Abstract

The main purpose of the study was to compare reliability of measurements for the evaluation of hip joint laxity in 59 dogs. Measurement of the distraction index (DI) of the PennHIP method and the Norberg angle (NA) of the Fédération Cynologique Internationale (FCI) scoring scheme as well as scoring according to the FCI scheme and the Swiss scoring scheme were performed by three observers at different level of experience. For each dog, two radiographs were acquired with each method by the same operator to evaluate intraoperator-reliability. Intraoperator-reliability was slightly better for the NA compared with the DI with an intraclass correlation coefficient (ICC) of 0.962 and 0.892 respectively. The ICC showed excellent results in intraobserver-reliability and interobserver-reliability for both the NA (ICC 0.975; 0.969) and the DI (ICC 0.986; 0.972). Thus, the NA as well as the DI can be considered as reliable measurements. The FCI scheme and the Swiss scoring scheme provide similar reliability. While the FCI scheme seems to be slightly more reliable in experienced observers (Kappa FCI 0.687; Kappa Swiss 0.681), the Swiss scoring scheme had a noticeable better reliability for the unexperienced observer (Kappa FCI 0.465; Kappa Swiss 0.514). The Swiss scoring scheme provides a structured guideline for the interpretation of hip radiographs and can thus be recommended to unexperienced observers.

Authors' Contributions

Julius Klever and Andreas Brühschwein contributed to conception of study, study design, acquisition of data and data analysis and interpretation. Silvia Wagner contributed to acquisition of data. Sven Reese contributed to data analysis and interpretation. Andrea Meyer-Lindenberg contributed to conception of study and study design. All authors drafted, revised and approved the submitted manuscript.

中文翻译：

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比较诺伯格角和分散指数作为狗髋关节松弛度测量的可靠性。

摘要

这项研究的主要目的是比较59只狗髋关节松弛度评估的测量结果的可靠性。PennHIP方法的分散指数（DI）以及国际同盟华人评分系统（FCI）评分方案的诺伯格角（NA）的测量以及根据FCI方案和瑞士评分方案的评分由三个观察员在不同的位置进行经验等级。对于每只狗，由同一位操作员用每种方法获取两张射线照片，以评估操作员内的可靠性。与DI相比，NA的操作员内可靠性略好于组间相关系数（ICC）为0.962和0.892。对于NA（ICC 0.975; 0.969）和DI（ICC 0.986; 0），ICC在观察者内可靠性和观察者间可靠性方面均显示出色的结果。972）。因此，NA和DI都可以视为可靠的度量。FCI方案和瑞士计分方案提供相似的可靠性。尽管FCI方案在经验丰富的观察员中似乎更可靠（Kappa FCI 0.687; Kappa Swiss 0.681），但瑞士的评分方案对没有经验的观察员具有明显更好的可靠性（Kappa FCI 0.465; Kappa Swiss 0.514）。瑞士的评分方案为髋部X光片的解释提供了结构化的指南，因此可以推荐给没有经验的观察者。对于没有经验的观察者，瑞士的评分方案具有更好的可靠性（Kappa FCI 0.465； Kappa Swiss 0.514）。瑞士的评分方案为髋部X光片的解释提供了结构化的指南，因此可以推荐给没有经验的观察者。对于没有经验的观察者，瑞士的评分方案具有更好的可靠性（Kappa FCI 0.465； Kappa Swiss 0.514）。瑞士的评分方案为髋部X光片的解释提供了结构化的指南，因此可以推荐给没有经验的观察者。

作者的贡献

Julius Klever和AndreasBrühschwein为研究概念，研究设计，数据获取以及数据分析和解释做出了贡献。西尔维亚·瓦格纳（Silvia Wagner）为数据采集做出了贡献。Sven Reese为数据分析和解释做出了贡献。Andrea Meyer-Lindenberg对研究和研究设计的概念做出了贡献。所有作者都起草，修改和批准了提交的手稿。