Starke A, Böttcher P, Pfeil I
Andreas Starke, Fischhausstraße 5, 01099 Dresden, E-Mail:
Tierarztl Prax Ausg K Kleintiere Heimtiere. 2014;42(3):141-50.
Application of an X-ray technique under load to determine the humeroradial and humeroulnar joint conformation of dogs with elbow dysplasia (ED). The aim of the study was to determine whether there are significant differences in the measurements of dysplastic joints compared to healthy joints. In addition, we formulated the hypothesis, that a differentiation between humeroulnar and humeroradial incongruence in dysplastic elbows can be made based on the acquired radiographic measurements.
Radiographic measurements were obtained in 149 dogs with ED and compared to the results of a control group established in a previous study. Based on frequently observed measurement variations, these 149 elbow joints were categorized into different subgroups, which we re-compared with the control group. In healthy elbow joints of euthanized dogs, four different radial and ulnar osteotomies were performed with two- and three-dimensional conformation readjustment of the elbow joint. The joints were subjected to the same radiographic measurements and the results were compared to the control and ED groups.
There were no significant differences between the control group and all 149 ED joints. However, a marked delineation was possible because of significant differences and descriptive statistics among the four subgroups of ED joints. One of these subgroups displayed significant differences compared to all the examined groups and was labeled type I (n = 60). Because of a lack of distinction between two subgroups, these were combined and labeled type II (n = 40). Another sub-group comprising all the elbows that could not be classified as either type I or type II was labeled "indiff" (n = 49). The criteria for assigning an affected elbow joint to type I, type II or indiff were three subchondral joint space-widths, three indices calculated from the joint space-widths and one angle.
The technique investigated is suitable to assign a great number of affected joints to an incongruence type (type I or type II).The results of the osteotomy groups provide evidence that the three-dimensional ulnar shortening displays similarities to type I, whereas the three-dimensional radius shortening shows similarities to type II.
应用负重X射线技术来确定患有肘关节发育异常（ED）的犬的肱桡关节和肱尺关节形态。本研究的目的是确定发育异常关节的测量值与健康关节相比是否存在显著差异。此外，我们提出假设，即根据获得的X射线测量结果，可以区分发育异常肘关节中的肱尺关节和肱桡关节不匹配情况。
对149只患有ED的犬进行X射线测量，并与先前研究中设立的对照组结果进行比较。基于经常观察到的测量差异，将这149个肘关节分为不同亚组，然后我们再次将这些亚组与对照组进行比较。在安乐死犬的健康肘关节上，进行了四种不同的桡骨和尺骨截骨术，并对肘关节进行二维和三维形态调整。对这些关节进行相同的X射线测量，并将结果与对照组和ED组进行比较。
对照组与所有149个ED关节之间无显著差异。然而，由于ED关节的四个亚组之间存在显著差异和描述性统计，因此可以进行明显的区分。其中一个亚组与所有检查组相比显示出显著差异，并被标记为I型（n = 60）。由于两个亚组之间缺乏区分，因此将它们合并并标记为II型（n = 40）。另一个包含所有无法归类为I型或II型的肘关节的亚组被标记为“indiff”（n = 49）。将受影响的肘关节归类为I型、II型或indiff的标准是三个软骨下关节间隙宽度、根据关节间隙宽度计算的三个指数和一个角度。
所研究的技术适用于将大量受影响的关节归类为不匹配类型（I型或II型）。截骨术组的结果提供了证据，即三维尺骨缩短与I型相似，而三维桡骨缩短与II型相似。
