(2) Faculty of Veterinary Medicine - Lusófona University, Lisbon, Portugal
(3) Department of Animal Science, University of Trás-os-Montes and Alto Douro, Vila Real, Portugal
(4) Department of Engineering , University of Trás-os-Montes and Alto Douro, Vila Real, Portugal
(5) Department of Veterinary Science, University of Trás-os-Montes and Alto Douro, Vila Real, Portugal
Ana Santana (2)
Bruno Colaço (3)
Lio Gonçalves (4)
Mário Ginja (5)
Canine hip dysplasia is a high prevalence disease in dogs. Hip laxity is the major risk factor and can be measured in dogs older than 4 months in ventrodorsal stressed hip views using a specific distractor. The purpose of this study was to evaluate a dedicated semiautomatic computer software for measuring passive hip laxity in dogs. This study was based on the hip laxity measurement of 214 hips of dogs that underwent screening for passive hip laxity using hip distraction view. First all radiographs were send to obtain an official PennHIP report and then hip laxity was estimated calculating the distraction index using a semiautomatic dedicated software in two independent sessions to evaluate repeatability and reproducibility of PennHIP reports. The results of each sessions (S1 and S2) were compared between them and S1 with the official PennHIP reports to test the repeatability and reproducibility. The mean distraction index in evaluator S1 was 0.44±0.16, in S2 0.45±0.16 and in PennHIP reports measurements was 0.44±0.15. The paired t-test was not significant (P>0.05) between S1 and S2, as well as between S1 and PennHIP reports. Differences between S1 measurements and PennHIP reports are represented in Fig. 1. The ICC for distraction index results between S1 and S2 was 0.96 (95% confidence interval [CI], 0.95 to 0.97) and between S1 and PennHIP reports 0.94 (95% CI, 0.95 to 0.96). So, this software can be used for distraction index measurements in hip distraction views with confidence and may become radiographic reading procedure more affordable.
BIBLIOGRAFÍA
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