Janssens L, De Ridder M, Verhoeven G, Gielen I, van Bree H
Companion Animal Clinic KSD, Rotterdam, The Netherlands.
J Small Anim Pract. 2014 Mar;55(3):135-8. doi: 10.1111/jsap.12171. Epub 2013 Dec 24.
The aim of this study was to compare Norberg angle, linear femoral overlap and surface femoral overlap in radiographs of hips accepted for official hip dysplasia screening.
Radiographs of 100 dogs (200 hips) were reviewed. The three measurements were performed in each hip according to previously described methods and thereafter correlated.
Intra- and inter-observer reliability was very high (all >85%). The linear correlation between Norberg angle and linear femoral overlap or surface femoral overlap was 0·40 and 0·41, respectively. The linear correlation between linear femoral overlap and surface femoral overlap was 0·84.
Norberg angle cannot be compared with surface femoral overlap or linear femoral overlap, and a mathematical formula could not be computed for the comparison.
本研究旨在比较接受官方髋关节发育不良筛查的犬髋关节X线片中的诺伯格角、股骨线性重叠和股骨表面重叠。
回顾了100只犬（200个髋关节）的X线片。按照先前描述的方法对每个髋关节进行这三项测量，然后进行相关性分析。
观察者内和观察者间的可靠性非常高（均>85%）。诺伯格角与股骨线性重叠或股骨表面重叠之间的线性相关性分别为0.40和0.41。股骨线性重叠与股骨表面重叠之间的线性相关性为0.84。
诺伯格角不能与股骨表面重叠或股骨线性重叠进行比较，也无法计算出用于比较的数学公式。
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