Biomechanical Evaluation of a Novel, Compliant Low Profile Prosthetic Foot

新型、合规的薄型假足的生物力学评估

• 批准号: 10758936
• 负责人: Harrison Logan Bartlett
• 金额: $ 27.52万
• 依托单位: LITTLE ROOM INNOVATIONS, LLC
• 依托单位国家: 美国
• 财政年份: 2023
• 资助国家: 美国
• 起止时间: 2023-08-10 至 2024-07-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/10758936
• 关键词: Activities of Daily Living; Adopted; Amputation; Anatomy; Ankle; Behavior; Biomechanics; Body Regions; Categories; Compliant Behaviors; Devices; Family; Feedback; Gait; Goals; Height; Human; Individual; Kinetics; Knee Prosthesis; Knowledge; Length; Manufacturer; Measures; Modernization; Movement; Observational Study; Orthotic Devices; Outcome; Outcome Measure; Participant; Performance; Phase; Population; Process; Prosthesis; Protocols documentation; Series; Shapes; Stress; Structure; Surveys; Target Populations; Testing; Walking; Weight; Work; biomechanical test; design; experience; experimental study; foot; improved; kinematics; light weight; novel; novel strategies; primary outcome; prosthesis wearer; prosthetic foot; prototype; residual limb; satisfaction; standard of care; theories; walking speed

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.

项目概要 虽然传统观点认为残肢较长的人保留了更好的功能，但他们 实际上仅限于限制性能的低调脚。特别是，低轮廓的脚通常更僵硬 比其标准配置文件同行。因此，许多进行小腿截肢的人 长残肢无法获得充分满足其需求的假足。 该第一阶段申请描述了一种分层薄型假脚，适用于患有小腿畸形的患者 截肢可以在不牺牲力量的情况下达到前所未有的顺应性水平。后果 这种新颖的设计，初步工作已显示出与标准高度相当的能量存储和刚度 包装中的假脚仅为构建高度的三分之一。 第一阶段提案的主要目标是对项目的价值进行多主体评估 所提出的假肢既相对于一系列标准轮廓脚，也相对于市售的 低调的脚。为此，我们提出以下目标：1）设计并测试一系列分层低 为体重不超过 100 公斤、脚尺寸为 22 至 28 厘米的用户提供脚型轮廓，2) 评估脚部的生物力学优势 分层低轮廓脚，具有三个短残肢用户和三个长残肢用户 平地行走期间的残肢，以及 3) 评估分层低调的生物力学功能 进行一系列日常活动。