Biomechanical Evaluation of a Novel, Compliant Low Profile Prosthetic Foot

项目总结 虽然传统智慧认为残肢较长的个体保留了更大的功能，但他们 实际上被限制在低调的脚上，这限制了性能。特别是，低调的脚通常要僵硬得多。 比他们的标准轮廓对应的。因此，许多接受经胫骨截肢的人 残肢过长，无法获得完全满足其需求的假肢。 这一阶段的应用描述了一种分层的低轮廓假肢，适用于患有经胫骨疾病的个人 截肢可以在不牺牲力量的情况下达到前所未有的合规水平。由于…… 这种新颖的设计，初步工作表明，储能和刚度可与标准高度相媲美 在一个包裹中的假脚只有建筑高度的三分之一。 这项第一阶段提案的主要目标是对 建议的假肢既相对于一系列标准的轮廓足，也相对于商业上可获得的 低调的脚。为此，我们提出了以下目标：1)设计并测试了一个分层的低成本系列。 足部尺寸从22到28厘米的100公斤以下的用户的侧型足部，2)评估 三个残肢短、三个长的人的经胫骨假体分层低位足 3)评估分层低位步行的生物力学功能 涉足一系列日常活动。

PROJECT SUMMARY While conventional wisdom holds that individuals with longer residual limbs retain greater function, they are actually confined to low-profile feet that limit performance. In particular, low-profile feet are often much stiffer than their standard profile counterparts. As such, many of the individuals with transtibial amputation that have long residual limbs are unable to obtain prosthetic feet that adequately meet their needs. This Phase I application describes a layered low-profile prosthetic foot for individuals with transtibial amputation that can achieve an unprecedented level of compliance without sacrificing strength. As a result of this novel design, preliminary work has shown energy storage and stiffness comparable to a standard height prosthetic foot in a package just one third the build height. The primary goal of this Phase I proposal is to conduct a multi-subject assessment of the value of the proposed prosthesis both relative to a range of standard profile feet, and also relative to commercially available low-profile feet. In order to do so, we propose the following aims: 1) design and test a family of layered low- profile feet for users up to 100 kg with foot sizes from 22 to 28 cm, 2) assess the biomechanical benefits of the layered low-profile foot with three transtibial prosthesis users with short residual limbs and three users with long residual limbs during level ground walking, and 3) assess the biomechanical function of the layered low-profile foot in a battery of activities of daily use.