Evaluation of Hip Joint Laxity in Crab-Eating Foxes
World Small Animal Veterinary Association Congress Proceedings, 2018
M.S. Castilho1; S. Rahal1; M.J. Mamprim2; L.R. Inamassu2; R.N. Dias Neto1; A. Melchert3; R.H.F. Teixeira4; L.M. Matsubara1; C.R. Teixeira1
1Univ Estadual Paulista Unesp, Department of Veterinary Surgery and Anesthesiology, Botucatu, Brazil; 2Univ Estadual Paulista Unesp, Department of Animal Reproduction and Veterinary Radiology, Botucatu, Brazil; 3Univ Estadual Paulista Unesp, Department of Veterinary Clinic, Botucatu, Brazil; 4Municipal Zoological Park “Quinzinho de Barros,” Municipal Zoological Park “Quinzinho de Barros,” Sorocaba, Brazil


Like canids, crab-eating foxes may probably be predisposed to similar orthopedic diseases of domestic dogs, such as hip dysplasia. However, for the adequate hip dysplasia diagnosis in wild animals, the normality characteristics of each species must be determined.


This study aimed to assess radiographic and computed tomographic (CT) values of hip joint laxity in healthy crab-eating foxes.


Fifteen intact crab-eating foxes, eight males and seven females, ages 1 to 5 and mean body mass of 6.66 kg were used. Norberg angle (NA) was calculated from ventrodorsal hip-extended radiographs. To calculate the dorsolateral subluxation (DLS) score, the center distance (CD) index, the lateral center edge angle (LCEA), and the dorsal acetabular rim angle (DARA), measurements obtained from transverse CT images were used.


No statistically significant differences were observed between the right and left sides in the radiographic and tomographic parameters. The mean NA was 107.57°. The mean DLS score, the CD index, the LCEA, and the DARA were 60.79%, 0.16, 98.25° and 13.47° respectively.


The data obtained are helpful in characterizing mean values of the hip joint in healthy crab-eating foxes, and can contribute to the knowledge of the species.


Speaker Information
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M.S. Castilho
Department of Veterinary Surgery and Anesthesiology
Univ Estadual Paulista Unesp
Botucatu, Brazil

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