Evaluation of a Powered Ankle Prosthesis Capable of Bidirectional Control Via Neural Recording and Cutaneous Stimulation in Free-Space and Walking Tasks
2026年6月11日 更新者：Christopher Shallal、Massachusetts Institute of Technology
The purpose of this study is to evaluate the performance of a powered ankle prosthesis capable of bidirectional control via neural recording and cutaneous stimulation, during free-space and walking tasks.
This research aims to assess the sense of embodiment with the device, gait symmetry, and stability of a person with lower-extremity amputation walking with a powered ankle and their prescribed prosthesis.
Findings from this study will inform future developments in bionic ankle design with optimal integration with the human body, with the goal of improving prosthetic integration into daily life.
研究概览
详细说明
In summary there will be 3 cohorts in this study, 1) a group of subjects that have an osseointegrated fixture with implanted electrodes, 2) a group that does not have implanted electrodes, and 3) non-amputee healthy control group to serve as a baseline comparison.
In summary, the groups will be asked to wear a number of non-invasive sensors and the amputee groups will use a powered ankle prosthesis in place of their customary prosthesis.
Data will be collected from various wearable sensors and other motion-capture devices as the subjects walk.
At certain points during the study, the control settings of the powered prosthesis will be adjusted, either manually or automatically.
Trials will also be conducted with the subjects prescribed prosthesis.
研究类型
介入性
注册 (估计的)
10
阶段
- 不适用
联系人和位置
本节提供了进行研究的人员的详细联系信息，以及有关进行该研究的地点的信息。
学习地点
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Massachusetts
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Cambridge、Massachusetts、美国、02139
- 招聘中
- MIT Media Lab
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接触：
- Christopher Shallal, B.S.
- 电话号码：704-904-6112
- 邮箱：cshallal@mit.edu
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参与标准
研究人员寻找符合特定描述的人，称为资格标准。这些标准的一些例子是一个人的一般健康状况或先前的治疗。
资格标准
适合学习的年龄
- 成人
- 年长者
接受健康志愿者
是的
描述
Inclusion Criteria:
- Male or Female age 18-70. The patient must have a unilateral transtibial amputation . The patient must have the ability to ambulate at variable cadence (an expected lower extremity prosthesis functional level of K3 or above).
The patient must have adequate socket to support the device.
Exclusion Criteria:
- Women who are pregnant. Severe co morbidity, atypical skeletal anatomy, or poor general physical/mental health that, in the opinion of the Investigator, will not allow the subject to be a good study candidate (i.e. other disease processes, mental capacity, substance abuse, shortened life expectancy, vulnerable patient population, BMI >40, etc.).
学习计划
本节提供研究计划的详细信息，包括研究的设计方式和研究的衡量标准。
研究是如何设计的？
设计细节
- 主要用途：设备可行性
- 分配：非随机化
- 介入模型：单组作业
- 屏蔽：无（打开标签）
武器和干预
参与者组/臂 |
干预/治疗 |
|---|---|
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实验性的：Powered Prosthesis
The subject will be provided with a powered ankle prosthesis to attach in place of their customary prosthesis.
This powered prosthesis has the capability of providing active neural control of an ankle joint, and its control can be adjusted through a wireless link.
The subject will be given as much time as necessary to practice using the prosthesis before the experiments begin.
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This powered prosthesis has the capability of providing active neural control of an ankle joint, and its control can be adjusted through a wireless link.
It is motorized to provide positive power during walking.
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有源比较器：Prescribed Prosthesis
The subject will be undergo the same experiments with their prescribed ankle prosthesis to act as a comparison to the standard of care.
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Subject's prescribed prosthesis
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研究衡量的是什么？
主要结果指标
结果测量 |
措施说明 |
大体时间 |
|---|---|---|
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Kinematic Measures of Lower-Limb Biomechanics
大体时间：Multiple sessions across 1-2 weeks
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Quantitative analysis of lower-limb kinematics (joint angles in degrees) during level-ground walking, stair navigation, and other functional tasks.
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Multiple sessions across 1-2 weeks
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Kinetic Measures of Lower-Limb Biomechanics
大体时间：Multiple sessions across 1-2 weeks
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Quantitative analysis of kinetic biomechanics including ground reaction and joint forces (Newtons) during level-ground walking, stair navigation, and other functional tasks.
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Multiple sessions across 1-2 weeks
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合作者和调查者
在这里您可以找到参与这项研究的人员和组织。
研究记录日期
这些日期跟踪向 ClinicalTrials.gov 提交研究记录和摘要结果的进度。研究记录和报告的结果由国家医学图书馆 (NLM) 审查，以确保它们在发布到公共网站之前符合特定的质量控制标准。
研究主要日期
学习开始 (实际的)
2025年10月21日
初级完成 (估计的)
2030年9月30日
研究完成 (估计的)
2031年9月30日
研究注册日期
首次提交
2026年3月2日
首先提交符合 QC 标准的
2026年6月11日
首次发布 (实际的)
2026年6月12日
研究记录更新
最后更新发布 (实际的)
2026年6月12日
上次提交的符合 QC 标准的更新
2026年6月11日
最后验证
2026年6月1日
更多信息
此信息直接从 clinicaltrials.gov 网站检索，没有任何更改。如果您有任何更改、删除或更新研究详细信息的请求，请联系 register@clinicaltrials.gov. clinicaltrials.gov 上实施更改，我们的网站上也会自动更新.