Original Article - Clinical
Radiographic Hip Joint Phenotype of the Pembroke Welsh Corgi
Version of Record online: 23 JAN 2012
© Copyright 2011 by The American College of Veterinary Surgeons
Special Issue: Advances in Hip Dysplasia
Volume 41, Issue 1, pages 34–41, January 2012
How to Cite
Karbe, G. T., Biery, D. N., Gregor, T. P., Giger, U. and Smith, G. K. (2012), Radiographic Hip Joint Phenotype of the Pembroke Welsh Corgi. Veterinary Surgery, 41: 34–41. doi: 10.1111/j.1532-950X.2011.00938.x
- Issue online: 23 JAN 2012
- Version of Record online: 23 JAN 2012
- Manuscript Accepted: OCT 2011
- Manuscript Received: JUN 2010
- NIH. Grant Number: RR02512
To investigate the radiographic hip joint phenotype of the Pembroke Welsh Corgi.
Prospective and retrospective cross-sectional study.
Pembroke Welsh Corgis (n = 399).
Ventrodorsal, hip-extended radiographs were evaluated for subluxation, osteoarthritis (OA), caudolateral curvilinear osteophytes (CCO), and circumferential femoral head osteophytes (CFHO) of PennHIP evaluated Corgis. Joint laxity was measured by distraction index (DI).
All Corgis had DI > 0.30 (mean, 0.66), 6.8% had OA, 18% had subluxation, 22.3% had CCO, and 74.4% had CFHO. Higher DI increased the odds for subluxation and canine hip dysplasia (CHD) but not for OA, CCO, or CFHO. The presence of CCO increased the odds for OA by 4.6 times (P = .002) and 2.2 times (P = .01) for hip dysplasia. All dogs with OA had CFHO. The presence of CFHO increased the odds for subluxation by 8.7 times (p < .001) and 8.9 times (P < .001) for hip dysplasia. Subluxation increased the odds for OA by 15.4 times (P < .001).
Corgis had a low frequency of conventional OA despite having hip laxity that has been shown to correlate with hip OA and hip dysplasia in large-breed dogs. The relationship between CCO and OA was similar to published findings in nonchondrodystrophic large-breed dogs and the CFHO was significantly associated with subluxation. Both CCO and CFHO are associated with hip dysplasia in this small chondrodystrophic breed.