Presented in part as an abstract at the 13th European Society of Veterinary Orthopaedics and Traumatology Congress 2006, Munich, Germany.
COMPARISON OF CLINICAL, RADIOGRAPHIC, COMPUTED TOMOGRAPHIC, AND MAGNETIC RESONANCE IMAGING METHODS FOR EARLY PREDICTION OF CANINE HIP LAXITY AND DYSPLASIA
Article first published online: 26 FEB 2009
© 2009 American College of Veterinary Radiology
Veterinary Radiology & Ultrasound
Volume 50, Issue 2, pages 135–143, March/April 2009
How to Cite
GINJA, M. M. D., FERREIRA, A. J., JESUS, S. S., MELO-PINTO, P., BULAS-CRUZ, J., ORDEN, M. A., SAN-ROMAN, F., LLORENS-PENA, M. P. and GONZALO-ORDEN, J. M. (2009), COMPARISON OF CLINICAL, RADIOGRAPHIC, COMPUTED TOMOGRAPHIC, AND MAGNETIC RESONANCE IMAGING METHODS FOR EARLY PREDICTION OF CANINE HIP LAXITY AND DYSPLASIA. Veterinary Radiology & Ultrasound, 50: 135–143. doi: 10.1111/j.1740-8261.2009.01506.x
Supported in part by grants (SFRH/BD/16208/2004) from the Portuguese Foundation for Science and Technology (FCT).
- Issue published online: 26 FEB 2009
- Article first published online: 26 FEB 2009
- Received June 16, 2008; accepted for publication October 6, 2008.
- Canine hip dysplasia;
- diagnostic imagimg;
- hip laxity
The purpose of the study was to use two palpation methods (Bardens and Ortolani), a radiographic distraction view, three computed tomography (CT) measurements (dorsolateral subluxation score, the lateral center-edge angle, and acetabular ventroversion angle) and two magnetic resonance (MR) imaging hip studies (synovial fluid and acetabular depth indices) in the early monitoring of hip morphology and laxity in 7–9 week old puppies; and in a follow-up study to compare their accuracy in predicting later hip laxity and dysplasia. The MR imaging study was performed with the dog in dorsal recumbency and the CT study with the animal in a weight-bearing position. There was no association between clinical laxity with later hip laxity or dysplasia. The dorsolateral subluxation score and the lateral center-edge angle were characterized by a weak negative correlation with later radiographic passive hip laxity (−0.26<r<−0.38, P<0.05) but its association with hip dysplasia was not significant. There was an association between early radiographic passive hip laxity and synovial fluid index with later passive hip laxity (0.41<r<0.55, P<0.05) and this was significantly different in dysplastic vs. nondysplastic hips (P<0.05). There was no association between the remaining variables and later hip laxity or dysplasia. The overlapping ranges of early passive hip laxity and synovial fluid index for hip dysplasia grades and the moderate correlations with the later passive hip laxity make the results of these variables unreliable for use in predicting hip laxity and dysplasia susceptibility.