Wear and biomechanical characteristics of a novel shear-reducing insole with implications for high-risk persons with diabetes.
Wear and biomechanical characteristics of a novel shear-reducing insole with implications for high-risk persons with diabetes.
复制标题
新型减剪鞋垫的磨损和生物力学特征对糖尿病高危人群的影响。
DOI：
10.1089/dia.2005.7.638
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发表时间：
2005
期刊：
影响因子：
--
通讯作者：
Agrawal,CMauli
中科院分区：
文献类型：
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作者：
Lavery,LawrenceA;Lanctot,DanR;Constantinides,George;Zamorano,RubenG;Athanasiou,KyriacosA;Agrawal,CMauli
目的：本研究旨在测量一种新型鞋垫设计的压力和剪切力。方法：我们比较了三种多层粘弹性鞋垫和一种新型鞋垫设计(Glide-Soft®，Xilas Medical，Inc.，San Antonio，TX)。每个鞋垫的底垫都是由坚固密度的plastazote®[Apex Foot Products(现为Aetrex)，South Hackensack，NJ]制成，鞋面为Plastazote、乙酸乙酯或Poron®(兰格生物机械集团，Inc.，Deer Park，NY)。GlideSoft的设计使用了相同的材料，并使用了两片夹在中间的低摩擦材料。我们前瞻性地测量了30名健康成年人鞋垫在日常使用过程中老化时的足部压力、剪切力和材料硬度。我们使用F-SCAN®(TekScan，Inc.，波士顿，马萨诸塞州)来确定鞋内足部压力，并使用自动应力松弛蠕变压痕系统(Xilas Medical)来测量材料硬度。结果：在模拟条件下的实验室测试中，GlideSoft鞋垫的峰值剪切力比标准鞋垫(P<；0.05)低57%。在所有试验时间段，乙酸乙酯的压缩刚度值均高于Plastazote和Poron(P<；0.05)。在鞋内压力峰值测量中，任何鞋垫之间没有统计学差异(P>；0.05)。结论：与使用三种不同材料组合的标准鞋垫相比，GlideSoft设计的鞋垫在高达32万步的时间内显示出显著的剪切力降低，同时保持了相当的压力降低。
Objective:This study was designed to measure pressure and shear reduction of a novel insole design.Methods:We compared three multilayer viscoelastic insoles to a novel insole design (Glide- Soft®, Xilas Medical, Inc., San Antonio, TX). The bottom pad of each insole was fabricated from firm-density Plastazote® [Apex Foot Products (now Aetrex), South Hackensack, NJ] with an upper of Plastazote, ethyl vinyl acetate, or PORON® (Langer Biomechanics Group, Inc., Deer Park, NY). The GlideSoft design used the same materials with two intervening thin sheets of a low friction material. We measured foot pressures, shear, and material stiffness prospectively as the insoles aged during daily usage in 30 healthy adults. We used theF-Scan® (Tekscan, Inc., Boston, MA) to determine in-shoe foot pressures and the Automated Stress-relaxation Creep Indenter System (Xilas Medical) to measure material stiffness. To evaluate shear force, the insole was placed on the slide assembly of a custom-designed shear tester equipped with a reciprocating mechanism and force transducers.Results:The GlideSoft exhibited 57% less peak shear force than the standard insole (P< 0.05) in laboratory testing under simulated conditions. Ethyl vinyl acetate had higher compressive stiffness values than Plastazote and PORON at all test intervals (P< 0.05). There were no statistical differences between any of the insoles for peak in-shoe pressure measurements (P> 0.05).Conclusions:The GlideSoft design demonstrated a significant reduction in shear while maintaining equivalent pressure reduction compared with standard insole designs with three different material combinations for up to 320,000 steps.