title: Quantitative evaluation of hip joint laxity in 22 Border Collies using computed tomography.
abstract: The purpose of this study was to obtain the computed tomography (CT) data for the hip joints of 22 Border Collies. The dorsolateral subluxation (DLS) score, lateral center edge angle (LCEA), dorsal acetabular rim angle (DARA) and center distance (CD) index were measured on the CT images in a weight-bearing position. Radiographic Norberg angle (NA) was also measured. The mean values were 45.7 +/- 10.2% for DLS score, 85.9 degrees +/- 10.3 degrees for LCEA, 18.5 degrees +/- 7.3 degrees for DARA, 0.40 +/- 0.17 for CD index and 102.7 degrees +/- 6.9 degrees for NA. Since the DLS score and LCEA showed strong correlation, combined use of these parameters might improve diagnostic accuracy. We consider CT evaluation in a weight-bearing position to be a useful method for multidirectional evaluation of hips.
authors.affiliation: Department of Clinical Veterinary Science, Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Hokkaido, Japan.
authors.forename: Miori
authors.initials: M
authors.lastname: Kishimoto
authors.forename: Kazutaka
authors.initials: K
authors.lastname: Yamada
authors.forename: Sa-Hun
authors.initials: SH
authors.lastname: Pae
authors.forename: Naoyoshi
authors.initials: N
authors.lastname: Muroya
authors.forename: Hirokazu
authors.initials: H
authors.lastname: Watarai
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Anzai
authors.forename: Junichiro
authors.initials: J
authors.lastname: Shimizu
authors.forename: Toshiroh
authors.initials: T
authors.lastname: Iwasaki
authors.forename: Yoh-Ichi
authors.initials: Y
authors.lastname: Miyake
authors.forename: Erik R
authors.initials: ER
authors.lastname: Wisner
mesh_terms: D000077:Acetabulum / Q000000981:diagnostic imaging; D000818:Animals; D004283:Dog Diseases / Q000000981:diagnostic imaging*; D004285:Dogs; D005069:Evaluation Studies as Topic; D006619:Hip Dysplasia, Canine / Q000000981:diagnostic imaging*; D006621:Hip Joint / Q000000981:diagnostic imaging*; D007593:Joint Instability / Q000000981:diagnostic imaging*; D012016:Reference Values; D012680:Sensitivity and Specificity; D014057:Tomography, X-Ray Computed / Q000662:veterinary*; D016474:Weight-Bearing