Biomechanical Evaluation of Adaptable Ankle-Foot Prostheses

适应性踝足假体的生物力学评估

• 批准号: 8181311
• 负责人: Andrew H. Hansen
• 金额: --
• 依托单位: MINNEAPOLIS VA MEDICAL CENTER
• 依托单位国家: 美国
• 财政年份: 2010
• 资助国家: 美国
• 起止时间: 2010-10-01 至 2013-09-30
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/8181311
• 关键词: Affect; Age; Amputees; Ankle; Area; Articular Range of Motion; Biomechanics; Biomimetics; Characteristics; Control Groups; Crossover Design; Data; Data Collection; Development; Devices; Disadvantaged; Distal; Engineering; Equilibrium; Esapent; Evaluation; Exertion; Future; Heel; Height; Individual; Investigation; Joints; Knee; Knee Prosthesis; Knee joint; Laboratories; Left; Length; Limb Prosthesis; Limb structure; Literature; Location; Locomotion; Lower Extremity; Marketing; Measurement; Measures; Mechanics; Mission; Motion; Motor; Muscle; Musculoskeletal; Names; Nature; Participant; Patient Care; Patient Self-Report; Persons; Phase; Physiological; Positioning Attribute; Process; Property; Prosthesis; Quality of life; Ramp; Randomized; Reaction; Recruitment Activity; Relative (related person); Research; Residual state; Rest; Safety; Series; Shapes; Shoes; Speed; Structure; Surface; System; Testing; Thick; Time; Torque; Walking; Weight; Will brand of mephenoxalone; Work; analog; ankle joint; base; carbon fiber; clinically relevant; design; experience; foot; improved; information gathering; insight; instrument; kinematics; pressure; primary outcome; prosthesis adjustment; prosthetic alignment; sensor; tool

DESCRIPTION (provided by applicant): Project Summary This project will study fifteen unilateral below-knee prosthesis users using six different prosthetic feet on five ramp surfaces (-10o, -5o, 0o, 5o, and 10o). Two of the six components are claimed to be adaptable to walking surface slopes. For each of these adaptable systems, two similar components will also be tested in an attempt to determine the effects of their approaches to adaptation on ramp walking. Each participant will use all components in a random order, making the study a randomized cross-over design. Measurements will focus on the effective torque experienced at the end of the residual limb socket, which should relate to pressures felt within the socket and required activation of muscles controlling the remaining knee. The torque versus angle characteristic at the ankle and the roll- over shape will also be measured to estimate the relative "stiffness," the effective alignment (set-point) for each step, and the energy requirements of a system that would mimic the able-bodied system. Self-reported effort and comfort associated with the use of each prosthetic foot on the ramps will also be collected from prosthesis users in the study. Data will also be collected on age-matched able- bodied persons for comparison of their ankle-foot biomechanics on the various ramp surfaces with those of the prosthetic ankle-foot systems.

描述（由申请人提供）： 本项目将研究15名单侧膝下假肢使用者在5个斜坡表面（-10o、-5o、0 o、5 o和10 o）上使用6种不同的假肢脚。六个组件中的两个声称是适应步行表面斜坡。对于这些适应性强的系统中的每一个，也将测试两个类似的组件，试图确定他们的方法，以适应坡道步行的影响。每名参与者将以随机顺序使用所有组件，使研究成为随机交叉设计。测量将集中在残肢接受腔末端所经历的有效扭矩，其应与接受腔内所感受到的压力以及控制剩余膝关节的肌肉所需的激活有关。还将测量踝部处的扭矩与角度特性和翻转形状，以估计相对“刚度”、每一步的有效对准（设定点）以及将模拟健全系统的系统的能量需求。在研究中，还将从假肢使用者那里收集与在坡道上使用每只假肢脚相关的自我报告的努力和舒适度。此外，亦会收集年龄相若的健全人士的数据，以比较他们在不同斜坡表面上的踝足生物力学与使用义肢踝足系统的踝足生物力学。