Veterinary Health Center, Department of Veterinary Medicine and Surgery, Equine Surgery, College of Veterinary Medicine, University of Missouri, Columbia, Missouri, United States of America.
Equestrian Studies, William Woods University, Fulton, Missouri, United States of America.
PLoS One. 2020 Feb 18;15(2):e0228872. doi: 10.1371/journal.pone.0228872. eCollection 2020.
This study has investigated the immediate effect of induced hindlimb length difference on hindlimb lameness measured as differences in minimum (Pmin) and maximum (Pmax) pelvic heights in 16 horses trotting in a straight line and lungeing on both hard and soft surfaces with body-mounted inertial sensors. Hindlimb length differences were induced by applying an Easyboot Glue-on shoe to one hindlimb. Changes in Pmin and Pmax with induced hindlimb length difference were assessed with a two-way repeated-measures ANOVA with trial (straight, lunge with inside limb elevation, lunge with outside limb elevation) and surface (hard, soft) as within-subject factors. Change in Pmin, indicating an impact-type lameness, in the hind limb with the elevation, was significant in both the straight line and while lunging on both hard and soft surfaces. Change in Pmax, indicating pushoff-type lameness, in the opposite, non-elevated hind limb, was significant when trotting in a straight line but not while lunging.
本研究利用贴附式马靴在一匹马的后肢单侧产生长度差异，利用贴附于马匹躯体的惯性传感器，检测其在直线跑步和对角伸展步伐时，最小（Pmin）和最大（Pmax）骨盆高度的差异，评估这种即时的后肢长度差异对后肢跛行的影响。通过两向重复测量方差分析评估 Pmin 和 Pmax 的变化，试验条件为直线跑步、对角伸展步伐（内侧肢抬高、外侧肢抬高），表面条件为硬地、软地。当直线跑步或对角伸展步伐时，患肢（提升肢）的 Pmin 变化显著，提示冲击型跛行；而对侧非提升肢的 Pmax 变化在直线跑步时显著，对角伸展步伐时不显著，提示蹬离型跛行。
