Santana Ana, Alves-Pimenta Sofia, Franco-Gonçalo Pedro, Gonçalves Lio, Martins João, Colaço Bruno, Ginja Mário
Department of Veterinary Medicine, Lusófona University, Lisbon, Portugal.
CECAV Veterinary and Animal Research Centre, The University of Trás-os-Montes and Alto Douro, Vila Real, Portugal.
Vet World. 2022 Mar;15(3):679-684. doi: 10.14202/vetworld.2022.679-684. Epub 2022 Mar 24.
Passive hip laxity (PHL) is considered the primary risk factor for canine hip dysplasia (HD) and is estimated, in stress hip radiographs, using the distraction index (DI). The study aimed to associate the early PHL using the hip Distractor of University of Trás-os-Montes and Alto Douro (DisUTAD) and the late HD grades.
A total of 41 dogs (82 hips) were submitted to a follow-up study. First, between 4 and 12 months of age, dogs were radiographed using the DisUTAD hip distractor and were determined the DI for each hip joint. Then, after 12 months of age, dogs were reevaluated for HD using the conventional hip ventrodorsal projection and hips were evaluated for HD using the Fédération Cynologique Internationale (FCI) scoring system.
Hips of dogs' in the second examination with FCI grades of A (n=28), B (n=11), C (n=22), and D and E (n=21) had an early DI of 0.32±0.1, 0.38±0.08, 0.50±0.12, and 0.64±0.11, respectively. Statistical analysis using the general linear model univariate, with the DI as dependent variable and the FCI grades, side and sex as fixed factors, and the Bonferroni correction test showed significant differences among FCI grades (p<0.05).
These results show the association between early DI and the late FCI HD grades and the DisUTAD is recommended for the early canine HD diagnosis.
被动性髋关节松弛（PHL）被认为是犬髋关节发育不良（HD）的主要风险因素，在应力位髋关节X光片中，通过牵张指数（DI）进行评估。本研究旨在探讨使用特拉索斯-蒙特斯和杜罗河上游大学髋关节撑开器（DisUTAD）评估的早期PHL与晚期HD分级之间的关联。
共有41只犬（82个髋关节）参与了一项随访研究。首先，在4至12月龄期间，使用DisUTAD髋关节撑开器对犬进行X光检查，并确定每个髋关节的DI。然后，在12月龄之后，使用传统的髋关节腹背位投照对犬进行HD复查，并使用国际犬业联合会（FCI）评分系统对髋关节进行HD评估。
在第二次检查中，FCI分级为A（n=28）、B（n=11）、C（n=22）以及D和E（n=21）的犬的髋关节，其早期DI分别为0.32±0.1、0.38±0.08、0.50±0.12和0.64±0.11。采用单因素一般线性模型进行统计分析，以DI为因变量，FCI分级、侧别和性别为固定因素，并进行Bonferroni校正检验，结果显示FCI分级之间存在显著差异（p<0.05）。
这些结果表明早期DI与晚期FCI HD分级之间存在关联，推荐使用DisUTAD进行犬HD的早期诊断。
