Foutz Timothy L, Budsberg Steven C
Am J Vet Res. 2020 Mar;81(3):210-219. doi: 10.2460/ajvr.81.3.210.
To develop a 3-D kinematic model to measure truncal motion in dogs and assess changes in truncal motion in dogs when wearing each of 2 service vests.
5 adult mixed-breed dogs.
27 reflective markers were placed on the pelvis, trunk, and scapula of each dog. Six infrared cameras were placed around a treadmill to track the location of the markers within a calibrated space. Dogs were recorded during walking and trotting on the treadmill. Local and global coordinate systems were established, and a segmental rigid-body model of the trunk was created. Dogs were then recorded while wearing a custom vest and an adjustable vest during walking and trotting on the treadmill. Range of motion of the trunk when dogs were and were not wearing vests was compared by repeated-measures ANOVA.
An anatomic coordinate system was established by use of markers located at T1, T13, and the xiphoid process. Range of motion of the trunk during a gait cycle did not differ significantly regardless of the day of the test for both walking and trotting gaits. Trunk motion of dogs when walking and trotting was significantly reduced when dogs were wearing a vest, compared with trunk motion when not wearing a vest.
A 3-D kinematic model for measuring truncal rotation was developed. Results indicated measurable differences in the gait of dogs when wearing each of the 2 service vests, compared with the gait when not wearing a vest.
建立一个三维运动学模型来测量犬的躯干运动，并评估犬在穿着两种服务背心时躯干运动的变化。
5只成年混种犬。
在每只犬的骨盆、躯干和肩胛骨上放置27个反光标记。在跑步机周围放置6台红外摄像机，以跟踪校准空间内标记的位置。在犬在跑步机上行走和小跑时进行记录。建立局部和全局坐标系，并创建躯干的节段刚体模型。然后在犬穿着定制背心和可调节背心在跑步机上行走和小跑时进行记录。通过重复测量方差分析比较犬穿背心和不穿背心时躯干的运动范围。
利用位于T1、T13和剑突处的标记建立了解剖坐标系。无论测试日期如何，步态周期中躯干的运动范围在行走和小跑步态中均无显著差异。与不穿背心时相比，犬穿背心时行走和小跑时的躯干运动明显减少。
开发了一种用于测量躯干旋转的三维运动学模型。结果表明，与不穿背心时的步态相比，犬穿着两种服务背心时的步态存在可测量的差异。
