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

用于标准化的适应性假肢设计的发展 社区参与中的生物力学 摘要/摘要 该项目的愿景是改善肢体功能障碍者的活动能力 截肢，尤其是在凹凸不平的地面、斜坡上或脚的位置左右不同时。人民 截肢者将能够自信地参加更广泛的活动。这将增强他们的 个人满意度，从而提高他们的生活质量。使用假肢的人目前有显著的 行动不便和跌倒的高发生率，部分原因是市场上可获得的假肢不能 以满足他们的日常需求。 目前的假肢是为平地、向前行走而设计和优化的。因此， 假肢医生将假脚对准这一活动的单一首选位置。在日常活动中， 包括安静的站立，脚放在不同的位置。当假肢使用者四处走动时 在他们所在的社区，他们面临着许多不符合平地前进的障碍 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不佳，则放置 脚变得不那么受控制了。因此，有必要从根本上重新考虑假足设计，以 恢复身体-地面位置的适应性。 这个项目追求的创新方法是开发恢复自发的安肯特罗 适应性，使假肢使用者能够在不同的地形上行走。小说，自然而然地 自适应脚允许相对于地面的一系列对齐方式，以适应各种姿势和 步态。这是通过特定的联系来实现的，这些联系以可预测的结果对环境力量作出反应， 移动旋转中心，使其与合力对齐。而不是将合规性 表面，这可能会导致姿势和步态不稳定和更高的能源成本，适应性足恢复 在不牺牲稳定性的情况下实现适应性。 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 包括由第一阶段里程碑成就产生的链接系统，然后使用该细化 用于社区扩展使用和评估的原型。安肯特罗的发展包括优化连接 机构，开发一种新的脚趾和脚跟弹簧，改进脚罩尺寸，并验证设计 通过标准化的机械测试。临床评估包括挑战挑战的受控实验室测试 侧面到侧面的适应性，与社区试验并行。数量和质量的结果将是 生成以评估安肯特罗的临床益处。

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.