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Vet Comp Orthop Traumatol 2019; 32(03): 234-240
DOI: 10.1055/s-0039-1683390
Original Research
Georg Thieme Verlag KG Stuttgart · New York

Accuracy in Determining Canal Flare Index Using Different Radiographical Positions for Imaging Canine Femurs

Caroline R. de Andrade
1   Department of Veterinary Clinic and Surgery, Faculty of Agrarian and Veterinary Sciences, São Paulo State University, Jaboticabal, São Paulo, Brazil
,
Bruno W. Minto
1   Department of Veterinary Clinic and Surgery, Faculty of Agrarian and Veterinary Sciences, São Paulo State University, Jaboticabal, São Paulo, Brazil
,
Rafael M. Dreibi
1   Department of Veterinary Clinic and Surgery, Faculty of Agrarian and Veterinary Sciences, São Paulo State University, Jaboticabal, São Paulo, Brazil
,
Lúcia M. I. Diogo
1   Department of Veterinary Clinic and Surgery, Faculty of Agrarian and Veterinary Sciences, São Paulo State University, Jaboticabal, São Paulo, Brazil
,
Fernando Y. K. Kawamoto
1   Department of Veterinary Clinic and Surgery, Faculty of Agrarian and Veterinary Sciences, São Paulo State University, Jaboticabal, São Paulo, Brazil
,
Guilherme G. Franco
1   Department of Veterinary Clinic and Surgery, Faculty of Agrarian and Veterinary Sciences, São Paulo State University, Jaboticabal, São Paulo, Brazil
,
Ricardo A. R. Uscategui
1   Department of Veterinary Clinic and Surgery, Faculty of Agrarian and Veterinary Sciences, São Paulo State University, Jaboticabal, São Paulo, Brazil
,
Luís G. G. G. Dias
1   Department of Veterinary Clinic and Surgery, Faculty of Agrarian and Veterinary Sciences, São Paulo State University, Jaboticabal, São Paulo, Brazil
› Author Affiliations
Further Information

Publication History

01 June 2018

08 January 2019

Publication Date:
03 April 2019 (online)

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Abstract

Objective The aim of this study was to compare in vitro accuracy of femoral measurements obtained from different radiographical positions with actual femoral anatomical dimensions in dogs.

Materials and Methods Craniocaudal projections of the femur in ventrodorsal position, standard craniocaudal radiographical (SR) and craniocaudal radiography with horizontal radiographical beam (HR), in addition to anatomical macroscopic measurements (A), were obtained from 45 femurs from 23 canine cadavers, for calculation of the canal flare index (CFI). The differences between the radiographical positions and 95% limits of agreement (LOA) between the CFI-SR, CFI-HR and CFI-A were evaluated by the Bland–Altman method.

Results The standard craniocaudal radiograph provided an approximate dimension of the proximal femoral morphology (mean difference: 0.121 ± 0.391) with a different CFI value (p = 0.0341) from CFI-A. The craniocaudal radiograph taken using a horizontal beam provided greater accuracy (mean difference: 0.087 ± 0.42) in our study.

Clinical Significance The craniocaudal projection using a horizontal radiographical beam was more accurate than the standard craniocaudal projection for measurement of the true anatomical dimensions of the canine femur, minimizing the influence of the technique on the CFI values.

Keywords

uncemented total hip arthroplasty - horizontal beam - femoral morphology - craniocaudal radiograph

Author Contribution

Caroline Ribeiro de Andrade contributed to conception of study, study design, acquisition of data and data analysis and interpretation. Bruno W. Minto, Ricardo A.R. Uscategui, and Luís GGG Dias contributed to conception of study, study design and data analysis and interpretation. Rafael M. Dreibi, Lúcia M.I. Diogo, Fernando Y.K. Kawamoto, and Guilherme G. Franco contributed to conception of study, study design, and acquisition of data. Rafael M. Dreibi, Lúcia M.I. Diogo, Fernando Y.K. Kawamoto, Guilherme G. Franco, Ricardo A.R. Uscategui, and Luís G. G. G. Dias drafted and revised the submitted manuscript. Caroline Ribeiro de Andrade and Bruno W. Minto drafted, revised and approved the submitted manuscript.


 

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