Improving Footwear Options for Women and Men Veterans with Amputations

改善截肢男女退伍军人的鞋类选择

• 批准号: 10454895
• 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: 2018
• 资助国家: 美国
• 起止时间: 2018-07-01 至 2023-09-30
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/10454895
• 关键词: American; Amputation; Ankle; Athletic; Biomimetics; Child; Clinical; Clothing; Custom; Development; Devices; Distal; Emotional; Environment; Event; Excision; Failure; Feedback; Female; Future; Gait; Goals; Heel; Height; Home; Human; Knowledge; Leg; Life; Mechanics; Modeling; Occupations; Persons; Phase; Process; Prosthesis; Psychologist; Rehabilitation therapy; Research Project Grants; Role; Safety; Self Perception; Shapes; Shoes; Societies; Sports; Surface; System; Techniques; Technology Transfer; Testing; Travel; Veterans; Walking; Width; Woman; Work; ankle prosthesis; design; digital; experience; foot; gait examination; home test; improved; innovation; limb loss; men; novel; prosthetic alignment; prosthetic foot; psychologic; rehabilitation technology; satisfaction; social; symposium

This project will develop a new prosthetic ankle-foot system that allows Women Veterans to more easily change between their footwear of choice, including high heel shoes, allowing Women Veterans to more fully reintegrate into their lives after amputation. The proposed system will also be useful for Women and Men Veterans who would like to more easily switch between footwear of different heel heights for sports and other activities (e.g., cowboy boots and athletic shoes). Lastly, the proposed work will be relevant to many of the nearly 2 million Americans living with limb loss (Ziegler-Graham et al, 2008), with future versions of customized feet potentially being highly relevant for children with amputations. The vast majority of prosthetic feet are aligned for a specific heel height shoe, with a potentially de-stabilizing effect on gait if the user decides to wear footwear with different heel heights. Although there are a small number of “heel-height adjustable” feet on the market, the shapes of the plantar surfaces of these feet do not change to match the interior of different footwear, restricting the range of shoes that can be used without instability of the foot within the shoe. Additionally, alignment changes for different footwear are performed by the user rather than by a certified prosthetist, increasing the likelihood of sub-optimal alignment. Lastly, there are no commercially available prosthetic feet that can adjust to shoes of different widths, further limiting footwear options. In order to maximize the participation and functional mobility of Women and Men Veterans with leg amputations, there is a great need for the development of a prosthetic foot/ankle system that could accommodate a diverse range of footwear and could be changed easily and quickly by the user while retaining the clinically optimal alignment determined by the prosthetist. The purpose of this project is to develop a new ankle-foot prosthesis system that will allow Veterans with amputations to choose any footwear with heel heights between 0-100mm (0-4 inches), and to be able to easily switch between these footwear without needing to change the alignment of their prosthesis. Prosthetic ankle-foot systems will also be developed to cover a range of sizes between 22 and 28 cm (women’s sizes 4.5-13.5 or men’s sizes 3-12). Mechanical testing using the ISO 10328 standard will be used to determine structural strength and durability of the ankle-foot system. The ISO 10328 standard includes static proof, ultimate strength, and durability testing to 2 million cycles. Failures during mechanical testing will inform changes in the design, followed by repeated mechanical testing. A durability testing threshold of 300,000 cycles will be used to suggest sufficient durability for a one month take home test (safety factor > 3). Six Veterans with leg amputations (N=3 women and N=3 men) will participate throughout the development project, providing feedback to improve the design and comparing the novel system to the Elation®, a commercially-available adjustable heel-height foot. At the end of the project, a subset of these Veterans will take the system home for one month, each using three pairs of shoes with different heel heights of their choice. During the one month testing, Veterans will be contacted weekly to obtain feedback from real-world usage, which will be used to improve the design. Technology transfer efforts will begin during this project, including travel to conferences attended by prosthetics companies. Dissemination is also planned during the second half of the project.

该项目将开发一种新的假肢踝足系统，使女性退伍军人能够更轻松地更换选择的鞋子，包括高跟鞋，使女性退伍军人在截肢后能够更全面地重新融入生活。拟议的系统也将很有用。对于希望更轻松地在不同鞋跟高度的鞋类之间切换以进行运动和其他活动的女性和男性退伍军人（例如牛仔靴和运动鞋）最后，拟议的工作将与近 2 种鞋中的许多相关。数以百万计的美国人患有肢体丧失（Ziegler-Graham 等人，2008 年），未来版本的定制脚可能与截肢儿童高度相关。 绝大多数假脚都是针对特定鞋跟高度的鞋进行调整的，如果用户决定穿不同鞋跟高度的鞋，则可能会对步态产生不稳定影响，尽管有少数“鞋跟高度可调节”的脚。在市场上，这些脚的足底表面的形状不会改变以匹配不同鞋类的内部，从而限制了可以在鞋内脚不不稳定的情况下使用的鞋的范围。此外，不同鞋类的对准变化也存在。执行的最后，市场上没有可以适应不同宽度鞋子的假脚，这进一步限制了鞋子的选择，以最大限度地提高参与度和功能性。由于腿部截肢的女性和男性退伍军人的活动能力，非常需要开发一种假足/踝系统，该系统可以适应各种鞋类，并且可以由用户轻松快速地更换，同时保持确定的临床最佳对准由假肢师。 该项目的目的是开发一种新的踝足假肢系统，使截肢退伍军人能够选择鞋跟高度在 0-100 毫米（0-4 英寸）之间的任何鞋子，并且能够轻松地在这些鞋子之间切换，而无需需要改变假肢对齐方式的假肢踝足系统也将被开发以覆盖 22 至 28 厘米之间的尺寸范围（女性尺寸为 4.5-13.5）。或男士尺码 3-12）。 使用 ISO 10328 标准的机械测试将用于确定踝足系统的结构强度和耐用性 ISO 10328 标准包括 200 万次循环的静态验证、极限强度和耐用性测试。将使用 300,000 次循环的耐久性测试阈值来表明一个月的带回家测试具有足够的耐久性（安全系数 > 3）。 六名腿部截肢退伍军人（N = 3 名女性和 N = 3 名男性）将参与整个开发项目，提供反馈以改进设计，并将新颖的系统与商用可调节鞋跟高度的 Elation® 进行比较。项目结束后，这些退伍军人的一部分将把该系统带回家一个月，每人使用三双不同鞋跟高度的鞋子，在一个月的测试期间，每周都会联系退伍军人，以获取真实的反馈。世界使用情况，技术转让工作将在该项目期间开始，其中还计划在项目下半年进行传播。