Canal flare index evaluation for different dog breeds/Avaliacao do canal flare index femoral de diferentes racas de caes

• Published in: Ciência rural Vol. 301792365; no. 4; p. 1
• Main Authors: Gomide, Paula Regina Silva, Souza, Luis Renato Verissimo de, Andrade, Caroline Ribeiro de, Dreibi, Rafael Manzini, Santarosa, Bianca Paola, Minto, Bruno Watanabe
• Format: Journal Article
• Language: English
• Published: Universidade Federal de Santa Maria 01.04.2021
• ISSN: 0103-8478; 1678-4596
• DOI: 10.1590/0103-8478cr20200068

This study determined the canal flare index (CFI) of four dog breeds using two distinct femoral regions as a reference. Thirty-five radiographs of the hip joints of Golden Retrievers (GRG), German Shepherds (GSG), Labrador Retrievers (LRG), and Rottweilers (RG) of both sexes were used. Seventy experimental units were submitted to CFI calculation. Objective (CFIob) and subjective (CFIsub) values of the CFI of each experimental unit were determined according to the anatomical reference used for the calculation. A significant difference in the CFIob between the Golden Retriever and German Shepherd breeds (1.68 [+ or -] 0.16 and 1.49 [+ or -] 0.08), and in the CFIsub between Golden Retriever, German Shepherd, and Rottweiler breeds (2.09 [+ or -] 0.31, 1.86 [+ or -] 0.11, and 1.84 [+ or -] 0.18) was reported. The subjective form of measurement showed higher values than the objective form (GRG: 2.09 [+ or -] 0.31; GSG: 1.86 [+ or -] 0.11; LRG: 2.07 [+ or -] 0.12; RG: 1.84 [+ or -] 0.18). The CFIvalues of each breed were similar, suggesting a certain racial pattern. A significant difference in the interobserver assessment for both CFIsub and CFIob, in all races was observed. The CFI analysis identified morphological patterns of the proximal femur in the different races. Results indicated the need for standardization of the anatomical references used to calculate the CFI because there were statistical differences among the measurements among the observers. Key words: femur, hip dysplasia, prothesis, reproducibility, total hip arthroplasty. Objetivou-se determinar o canal flare index (CFI) de quatro racas especificas de caes, utilizando-se duas regioes femorais distintas como referenda. Foram analisadas 35 radiografias de articulaqoes coxofemorais de caes das ragas Golden Retriever (GGR), Pastor Alemao (GPA), Labrador Retriever (GLR) e Rottweiler (GR), de ambos os sexos, configurando 70 unidades experimentais submetidas ao cdlculo do CFI. Determinaram-se os valores objetivo (CFIob) e subjetivo (CFIsub) do CFI de cada unidade experimental de acordo com a referencia anatomica utilizada para o cdlculo. Houve diferenqa significativa do CFIob entre as racas Golden Retriever e Pastor Alemao (1,68 [+ or -] 0,16 e 1,49 [+ or -] 0,08), e do CFIsub entre as raqas Golden Retriever, Pastor Alemao e Rottweiler (2,09 [+ or -] 0,31, 1,86 [+ or -] 0,11 e 1,84 [+ or -] 0,18). A forma subjetiva de mensuraqao apresentou valores maiores que a forma objetiva (GGR: 2,09 [+ or -] 0,31; GPA: 1,86 [+ or -] 0,11; GLR: 2,07 [+ or -] 0,12; GR: 1,84 [+ or -] 0,18). Os valores de CFIde cada raqa se apresentaram similares, sugerindo haver determinado padrao racial. Houve diferenqa significativa na avaliaqao interobservadores, tanto do CFIsub quanto CFIob, em todas as raqas. A analise do CFI identificou padroes morfologicos do femur proximal nas diferentes raqas. Os resultados indicaram a necessidade de padronizaqao dos referenciais anatomicos utilizados para o cdlculo do CFI, uma vez que houve relevdncia estatistica entre as diferentes mensuraqoes entre os observadores. Palavras-chave: artroplastia total do quadril, displasia coxofemoral, femur, protese, reprodutibilidade.