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首页> 外文期刊>Journal of Biomechanics >Temperature as a predictive tool for plantar triaxial loading
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Temperature as a predictive tool for plantar triaxial loading

机译：温度作为足底三轴负荷的预测工具

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Diabetic foot ulcers are caused by moderate repetitive plantar stresses in the presence of peripheral neuropathy. In severe cases, the development of these foot ulcers can lead to lower extremity amputations. Plantar pressure measurements have been considered a capable predictor of ulceration sites in the past, but some investigations have pointed out inconsistencies when solely relying on this method. The other component of ground reaction forces/stresses, shear, has been understudied due to a lack of adequate equipment. Recent articles reported the potential clinical significance of shear in diabetic ulcer etiology. With the lack of adequate tools, plantar temperature has been used as an alternative method for determining plantar triaxial loading and/or shear. However, this method has not been previously validated. The purpose of this study was to analyze the potential association between exercise-induced plantar temperature increase and plantar stresses. Thirteen healthy individuals walked on a treadmill for 10 minutes at 3.2 km/h. Pre and post-exercise temperature profiles were obtained with a thermal camera. Plantar triaxial stresses were quantified with a custom-built stress plate. A statistically significant correlation was observed between peak shear stress (PSS) and temperature increase (r=0.78), but not between peak resultant stress (PRS) and temperature increase (r=0.46). Plantar temperature increase could predict the location of PSS and PRS in 23% and 39% of the subjects, respectively. Only a moderate linear relationship was established between triaxial plantar stresses and walking-induced temperature increase. Future research will investigate the value of nonlinear models in predicting plantar loading through foot temperature. (C) 2014 Elsevier Ltd. All rights reserved.
机译：糖尿病足溃疡是由存在周围神经病变的中度重复足底压力引起的。在严重的情况下，这些足溃疡的发展会导致下肢截肢。过去，足底压力测量被认为是溃疡位置的有效预测指标，但是一些研究指出，仅依靠这种方法时存在不一致之处。由于缺乏足够的设备，地面反作用力/应力的其他组成部分（剪切）尚未得到充分研究。最近的文章报道了剪切在糖尿病性溃疡病因中的潜在临床意义。由于缺乏适当的工具，足底温度已被用作确定足底三轴负荷和/或剪切力的替代方法。但是，此方法尚未经过验证。这项研究的目的是分析运动引起的足底温度升高和足底压力之间的潜在联系。 13名健康个体以3.2 km / h的速度在跑步机上行走10分钟。运动前和运动后的温度曲线是用热像仪获得的。用定制的应力板对足底三轴应力进行量化。在峰值剪切应力（PSS）与温度升高（r = 0.78）之间观察到统计学上的显着相关性，但在峰值合应力（PRS）与温度升高（r = 0.46）之间未观察到显着相关性。足底温度升高可以分别预测23％和39％的受试者PSS和PRS的位置。三轴足底应力和步行引起的温度升高之间只有中等的线性关系。未来的研究将研究非线性模型在通过足部温度预测足底负荷中的价值。 （C）2014 Elsevier Ltd.保留所有权利。

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