Vet Comp Orthop Traumatol 2019; 32(05): 376-382
DOI: 10.1055/s-0039-1688991
Original Research
Georg Thieme Verlag KG Stuttgart · New York

Effect of the Dog positioning on X-Ray Table on Hip Dysplasia Parameter Evaluation

João Martins
1  Faculty of Veterinary Medicine, Lusófona University, Lisboa, Portugal
2  CITAB - Centre for the Research and Technology of Agro-Environmental and Biological Sciences, Vila Real, Portugal
,
Bruno Colaço
2  CITAB - Centre for the Research and Technology of Agro-Environmental and Biological Sciences, Vila Real, Portugal
3  Department of Animal Science, University of Trás-os-Montes and Alto Douro, Vila Real, Portugal
,
2  CITAB - Centre for the Research and Technology of Agro-Environmental and Biological Sciences, Vila Real, Portugal
3  Department of Animal Science, University of Trás-os-Montes and Alto Douro, Vila Real, Portugal
,
José M. Gonzalo Orden
4  Department of Veterinary Medicine, Surgery and Anatomy, Faculty of Veterinary Medicine, University of León, Spain
,
António J. Ferreira
5  CIISA - Department of Clinics, University of Lisbon, Lisbon, Portugal
,
Mário M. Ginja
2  CITAB - Centre for the Research and Technology of Agro-Environmental and Biological Sciences, Vila Real, Portugal
6  Department of Veterinary Science, University of Trás-os-Montes and Alto Douro, Vila Real, Portugal
› Author Affiliations
Further Information

Publication History

24 October 2018

02 April 2019

Publication Date:
24 May 2019 (eFirst)

Abstract

Objective The aim of this study was to evaluate the effect of pelvic tilting along the long axis and femoral rotation on Norberg angle (NA), subluxation index (SI) and subluxation category (SC) in the standard ventrodorsal hip extended (VDHE) radiographical view on live animals.

Study Type This was a retrospective clinical study.

Materials and Methods Pairs of VDHE views, one adequately positioned and the other with pelvic tilting or femoral internal or external rotation, were compared for the NA, SI and SC.

Results On the malpositioned pelvis set, on the underside the mean ± SD NA was 98.7 ± 6.1°, the SI was 0.27 ± 0.12 and the SC was 2.8 ± 0.8 versus, on the acceptable set, the NA was 99.2 ± 6.4° (p > 0.05), the SI was 0.25 ± 0.12 (p < 0.05) and the SC was 2.3 ± 0.9 (p < 0.05); on the malpositioned upperside, the NA was 102.1 ± 6.4°, the SI was 0.21 ± 0.14 and the SC was 1.7 ± 1.1 versus, on the acceptable positioned set, the NA was 100.8 ± 6.7° (p < 0.05), the SI was 0.24 ± 0.15 (p < 0.05) and the SC was 2.3 ± 1.2 (p < 0.05). Femoral internal or external rotation sets did not show significant differences between malpositioned and acceptable positioned sets (p > 0.05).

Conclusions In clinical practice, pelvic tilting along the long axis in VDHE view results in non-favourable hip changes in the NA, SI and SC on the underside and favourable on the upperside, and the internal or external femoral rotation did not affect these variables.

Author Contribution

J. Martins contributed to conception and design, acquisition of data, data analysis and interpretation, drafting of the article, approving submission, agreeing to be accountable for all relevant content of the work. B. Colaço contributed to conception and design, acquisition of data, data analysis and interpretation, revising the manuscript, approving the submission, agreeing to be accountable for all relevant content of the work. S. Alves-Pimenta contributed to conception and design, acquisition of data, data analysis and interpretation, revising the manuscript, approving the submission, agreeing to be accountable for all relevant content of the work. J. Gonzalo Orden contributed to conception and design, acquisition of data, data analysis and interpretation, revising the manuscript, approving the submission, agreeing to be accountable for all relevant content of the work. A. Ferreira contributed to conception and design, acquisition of data, data analysis and interpretation, revising the manuscript, approving the submission, agreeing to be accountable for all relevant content of the work. M. Ginja contributed to conception and design, acquisition of data, data analysis and interpretation, revising the manuscript, approving the submission, agreeing to be accountable for all relevant content of the work.


Animal Care

Due to the observational and retrospective nature of the study, the ethical committee approval and the owner consent were waived.