Department of Surgery and Anaesthesiology, Ghent University, Merelbeke, Belgium.
Vet J. 2011 Oct;190(1):71-6. doi: 10.1016/j.tvjl.2010.08.016. Epub 2010 Sep 27.
The aim of this study was to evaluate the association between fore- and hind-hoof contact area and limb loading. Data from a previous study on forelimb loading and symmetry were compared with data on hindlimb kinetics, and the fore- and hind-hoof contact area at the walk and trot was evaluated. Five sound ponies, selected for symmetrical feet, were walked and trotted over a pressure plate embedded in a custom-made runway. The hindlimb peak vertical force (PVF) and vertical impulse (VI) were found to be significantly lower than in the forelimb, whereas their high symmetry ratios (>95%) did not show a significant difference from forelimb data. Hindlimb PVF in ponies was found to be slightly higher when compared to data reported for horses even though the ponies moved at a similar or lower relative velocity. The contact area had low intra-individual variability and was significantly smaller in the hind- than in the fore-hooves. A larger contact area was significantly associated with lower peak vertical pressure (PVP) but higher PVF and VI. No significant differences between left and right sides were found for contact area or loading variables. Pressure plate measurements demonstrated a significant association between hoof contact area and limb loading, in addition to intrinsic differences between fore and hindlimb locomotor function. The pressure plate provides the clinician with a tool to quantify simultaneously contralateral differences in hoof contact area and limb loading.
本研究旨在评估前、后蹄接触面积与肢体重力之间的关系。将先前关于前肢重力和对称性的数据与后肢动力学数据进行比较，并评估步行和小跑时的前、后蹄接触面积。选择对称性足的 5 匹健康小马，在嵌入定制跑道的压力板上行走和小跑。后腿的峰值垂直力（PVF）和垂直冲量（VI）明显低于前肢，但其高对称性比值（>95%）与前肢数据无显著差异。尽管小马的相对速度相似或更低，但与马的报道数据相比，小马的后腿 PVF 略高。接触面积的个体内变异性较低，后蹄的接触面积明显小于前蹄。较大的接触面积与较低的峰值垂直压力（PVP）但较高的 PVF 和 VI 显著相关。接触面积和加载变量在左右两侧均无显著差异。压力板测量除了前、后肢运动功能的内在差异外，还证明了蹄接触面积与肢体重力之间存在显著的相关性。压力板为临床医生提供了一种工具，可以同时定量分析对侧蹄接触面积和肢体重力的差异。
