The effects of common footwear on stance-phase mechanical properties of the prosthetic foot-shoe system
The effects of common footwear on stance-phase mechanical properties of the prosthetic foot-shoe system
复制标题
DOI：
10.1177/0309364617706749
复制
发表时间：
2018-04-01
影响因子：
1.5
通讯作者：
Orendurff, Michael
中科院分区：
文献类型：
--
作者：
Major, Matthew J.;Scham, Joel;Orendurff, Michael
背景：假肢脚是根据其机械功能和用户功能水平规定的。脚跟、中足和前足区域的刚度和滞后的细微变化可以影响假肢使用者步态的动力学和经济性。然而，使用者对鞋的选择可能会改变假肢脚-鞋系统的机械特性，从而损害精心设计和严格设计的脚的性能。目的：观察鞋类对假肢脚-鞋系统的机械特性的影响，包括通常规定的假肢脚。研究设计：重复测量，机械特性。方法：使用液压驱动材料测试机测量了五只假脚和四只普通鞋以及赤脚条件下的刚度和能量返回。结果：与赤脚相比，所有鞋子的脚跟能量返回平均下降4%-9%，其中穿着紧身衣的教练表现出最大的效果。脚的设计，可能会提高感知的稳定性，提供低脚跟刚度和快速的脚平坦的妥协，除了shoes.Conclusion：鞋改变假体的机械特性，在矢状面和额状面，这表明鞋的类型应控制或报告的研究比较假体。了解不同的鞋如何改变某些步态相关的特征的假肢可能会帮助决定由临床医生和假肢users.Clinical relevance鞋可以改变功能的假肢脚鞋系统在意想不到的，有时是不可取的方式，往往会导致类似的行为，尽管在脚的设计差异设置，并处方临床医生应仔细考虑这些影响假肢的性能。
Background: Prosthetic feet are prescribed based on their mechanical function and user functional level. Subtle changes to the stiffness and hysteresis of heel, midfoot, and forefoot regions can influence the dynamics and economy of gait in prosthesis users. However, the user's choice of shoes may alter the prosthetic foot-shoe system mechanical characteristics, compromising carefully prescribed and rigorously engineered performance of feet.Objectives: Observe the effects of footwear on the mechanical properties of the prosthetic foot-shoe system including commonly prescribed prosthetic feet.Study design: Repeated-measures, Mechanical characterization.Methods: The stiffness and energy return was measured using a hydraulic-driven materials test machine across combinations of five prosthetic feet and four common shoes as well as a barefoot condition.Results: Heel energy return decreased by an average 4%-9% across feet in all shoes compared to barefoot, with a cushioned trainer displaying the greatest effect. Foot designs that may improve perceived stability by providing low heel stiffness and rapid foot-flat were compromised by the addition of shoes.Conclusion: Shoes altered prosthesis mechanical characteristics in the sagittal and frontal planes, suggesting that shoe type should be controlled or reported in research comparing prostheses. Understanding of how different shoes could alter certain gait-related characteristics of prostheses may aid decisions on footwear made by clinicians and prosthesis users.Clinical relevance Shoes can alter function of the prosthetic foot-shoe system in unexpected and sometimes undesirable ways, often causing similar behavior across setups despite differences in foot design, and prescribing clinicians should carefully consider these effects on prosthesis performance.