Sonoelastographic Features of the Patellar Ligament in Clinically Normal Dogs

Objective This article describes the sonoelastographic features of the patellar ligament of sound dogs and tests feasibility, reproducibility and repeatability. Methods Clinically healthy medium-to-large breed dogs were enrolled. Sonoelastographic images of the patellar ligaments were obtained in lateral recumbency with the stifle flexed by an experienced operator and by a senior veterinary student. The elasticity colour map included red (soft), green (intermediate) and blue (hard). Tissue elasticity was measured by calculating the percentage of softness with dedicated software. Categorical, qualitative data analysis was performed using a weighted kappa statistic for repeatability and reproducibility.Acategorical qualitative assessmentwas performedbasedon a grading scale of 1 to 5 (soft, mostly soft, intermediate, mostly hard and hard).

Angela P. Piccionello1 Daniele Serrani1 Valeria Busoni2 Alberto Salvaggio1 Mattia Bonazzi3 Chiara Bergamino4 Antonella Volta5

1School of Bioscience and Veterinary Medicine, University of Camerino, Matelica, Italy 2Department of Imaging, Faculté de Médicine Vétérinaire, Université de Liège, Liège, Belgium 3Casa di Cura Veterinaria San Geminiano, Modena, Italy 4Department of Diagnostic Imaging, School of Veterinary Medicine, University College Dublin, College of Agriculture Food Science and Veterinary Medicine, Dublin, Ireland 5Department of Veterinary Science, University of Parma, Parma, Italy

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