Purdue University Veterinary Teaching Hospital, West Lafayette, Indiana.
Veterinary Health Center, University of Missouri, Columbia, Missouri.
Vet Surg. 2020 Aug;49(6):1230-1238. doi: 10.1111/vsu.13465. Epub 2020 Jun 2.
To establish a reliable methodology for radiographic determination of alignment of the normal canine femur in the sagittal plane.
Cadaveric pilot study.
Twenty-nine cadaveric canine femurs.
Femoral specimens were collected from the University of Missouri veterinary anatomy laboratory, and standardized sagittal plane radiographs were obtained. The anatomic and mechanical axes, joint orientation, lines and joint orientation angles were determined in the sagittal plane by using the center of rotation of angulation methodology. Landmarks were clearly described to allow repeatability and reliability of measurements. Three observers with various degrees of experience measured two centers of rotation of normal angulation, the anatomic caudoproximal femoral angle, and the mechanical caudodistal femoral angle for all femurs on three separate days. Interobserver and intraobserver reliability were measured by using two-way mixed intraclass correlation coefficients (ICC) with associated 95% CI.
Twenty-nine medium to large breed canine femora were measured. A high degree of correlation was present both among and between observers for all measurements performed, as defined by an ICC >0.8 for each.
The described methodology was reliable and repeatable for measurement of angulation of grossly normal canine femora in the sagittal plane when performed by observers with varying degrees of clinical experience, as evidenced by a high degree of correlation for all values measured.
This methodology may be used for standardized evaluation of alignment of canine femora in the sagittal plane.
建立一种可靠的方法，用于在矢状面确定正常犬股骨的对线。
尸体初步研究。
29 个犬股骨标本。
从密苏里大学兽医解剖实验室收集股骨标本，并获得标准化的矢状面 X 线片。通过旋转中心角度测量法，在矢状面确定解剖和机械轴、关节方向、线和关节方向角。明确描述了标志，以允许测量的可重复性和可靠性。三名经验程度不同的观察者在三天内对所有股骨的两个正常角度的旋转中心、解剖近远侧股骨角和机械远近侧股骨角进行了测量。采用双向混合组内相关系数（ICC）及其 95%置信区间（CI）来测量观察者间和观察者内的可靠性。
测量了 29 个中型至大型犬股骨。所有测量的观察者之间和观察者内部的相关性都很高，每个测量值的 ICC 均>0.8。
当由具有不同临床经验程度的观察者进行时，所描述的方法对于在矢状面测量大体正常犬股骨的角度是可靠且可重复的，所有测量值的相关性都很高。
该方法可用于犬股骨矢状面对线的标准化评估。
