Evolution of an Adaptable Prosthetic Foot Design for Normalization of Biomechanics During Community Participation

社区参与期间生物力学标准化的适应性假足设计的演变

• 批准号: 9910426
• 负责人: James Colvin
• 金额: $ 54.02万
• 依托单位: OHIO WILLOW WOOD COMPANY
• 依托单位国家: 美国
• 财政年份: 2017
• 资助国家: 美国
• 起止时间: 2017-09-05 至 2022-03-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/9910426
• 关键词: Achievement; Amputation; Amputees; Anatomy; Ankle; Articular Range of Motion; Biomechanics; Characteristics; Clinical; Communities; Community Participation; Community Trial; Control Groups; Development; Dimensions; Engineering; Evaluation; Evolution; Gait; Geometry; Goals; Heel; Home environment; Human; Impairment; Incidence; Individual; Kinetics; Laboratories; Lead; Limb Prosthesis; Limb structure; Lower Extremity; Manufacturer Name; Mechanics; Motion; Movement; Outcome; Participant; Performance; Personal Satisfaction; Phase; Population; Positioning Attribute; Posture; Prosthesis; Quality of life; Rotation; Side; Small Business Technology Transfer Research; Standardization; Surface; System; Test Result; Testing; Toes; Universities; Validation; Vision; Walking; Washington; base; carbon fiber; community involvement; cost; design; disability; falls; foot; functional outcomes; improved; improved outcome; innovation; kinematics; novel; preservation; prosthesis wearer; prosthetic foot; prototype; research clinical testing; satisfaction; simulation

Evolution of an Adaptable Prosthetic Foot Design for Normalization of Biomechanics During Community Participation Summary/Abstract The vision of this project is to improve the functional physical mobility of people with lower extremity amputations especially on uneven ground, side-slopes or when foot placement varies from side-to-side. People with amputations will be enabled to confidently participate in a wider range of activities. This will enhance their personal satisfaction thereby improving their quality of life. People using prostheses currently have significant mobility disability and a high incidence of falls, partly because commercially available prosthetic feet are unable to meet their day-to-day needs. Current prosthetic feet are designed and optimized for level-ground, forward walking. Consequently, prosthetists align the prosthetic foot to a single preferred position for this activity. During everyday activities, including quiet standing, feet are placed in different positions. When the prosthesis user ambulates around their community, they are faced with many obstacles that do not conform to the level-ground forward walking paradigm. When people engage in tasks while they walk, or if they have poor limb function, the placement of the foot becomes less controlled. Thus there is a need to fundamentally rethink prosthetic foot design to restore adaptability to body-ground position. The innovative approach pursued in this project is to develop the Ankentro which restores spontaneous adaptability, allowing the prosthesis user to ambulate over various terrains. The novel, spontaneously adaptable foot allows a range of alignments relative to the ground to accommodate a variety of postures and gait. This is achieved by specific linkages that respond to environmental forces with predictable results, moving the center of rotation so that it aligns to the resultant forces. Rather than incorporating compliant surfaces, which can cause postural and gait instability and higher energy cost, the Adaptable Foot restores adaptability without sacrificing stability. During the Phase II effort, the project team will develop a new prosthetic foot called the Ankentro that includes the linkage system resulting from the Phase I milestone achievements and then use that refined prototype for extended community use and evaluation. Ankentro development includes optimizing the linkage mechanism, developing a new toe and heel spring, refining foot covering dimensions, and validating the design with standardized mechanical tests. The clinical evaluations include controlled laboratory tests that challenge side-to-side adaptability, in parallel with community trials. Quantitative and qualitative outcomes will be generated to evaluate the clinical benefit of the Ankentro.

适应性假足设计的演变 社区参与过程中的生物力学 摘要/摘要 这个项目的目标是改善下肢残疾人的功能性身体活动能力 截肢，特别是在不平坦的地面，边坡或当脚的位置从一边到另一边不同。人 截肢者将能够自信地参加更广泛的活动。这将提高他们的 个人满意度，从而提高他们的生活质量。目前使用假肢的人 行动不便和福尔斯的高发病率，部分原因是商业上可用的假肢脚不能 来满足他们的日常需求 目前的假脚是为平地向前行走而设计和优化的。因此，委员会认为， 修复师将假足对准到用于该活动的单个优选位置。在日常活动中， 包括安静站立，脚被放置在不同的位置。当假肢使用者走动时 他们的社区，他们面临着许多障碍，不符合水平地面向前走 范例当人们在行走时从事任务时，或者如果他们的肢体功能较差， 脚变得不那么受控制。因此，需要从根本上重新考虑假足设计， 恢复对体地位置的适应性。 该项目采用的创新方法是开发Ankentro， 适应性，允许假肢使用者在各种地形上走动。小说，自发地 适应性足允许相对于地面的一系列对准，以适应各种姿势， 步态实现这一点的办法是建立具体联系，以可预测的结果应对环境力量， 移动旋转中心，使其与合力对齐。而不是将符合 表面，这可能会导致姿势和步态不稳定和更高的能量消耗，自适应脚恢复 适应性强，不牺牲稳定性。 在第二阶段的工作中，项目团队将开发一种名为Ankentro的新假肢脚， 包括第一阶段里程碑成就产生的联系系统，然后使用改进的 用于扩展社区使用和评估的原型。Ankentro开发包括优化联动 机构，开发一种新的脚趾和脚跟弹簧，完善足覆盖尺寸，并验证设计 进行标准化的机械测试临床评价包括对照实验室检查， 侧到侧的适应性，与社区试验平行。定量和定性结果将是 用于评价Ankentro的临床获益。