NCT07204912 · Massachusetts Institute of Technology
Evaluation of a Neural-Controlled Powered Prosthesis Across Diverse Real-World Tasks
What this study is about
The purpose of this study is to evaluate the performance and adaptability of a neural-controlled powered knee or ankle prosthesis across diverse real-world mobility tasks. This research aims to assess how compare the sense of embodiment with the device, symmetry, and stability of a person with an lower-extremity amputation walking with a bionic prosthesis and their prescribed prosthesis.
View original scientific description
The purpose of this study is to evaluate the performance and adaptability of a neural-controlled powered knee or ankle prosthesis across diverse real-world mobility tasks. This research aims to assess how compare the sense of embodiment with the device, symmetry, and stability of a person with an lower-extremity amputation walking with a bionic prosthesis and their prescribed prosthesis. Findings from this study will inform future developments in bionic prosthesis design with optimal integration with the human body, with the goal of improving prosthetic integration into daily life.
Interventions
DEVICE
MIT Powered Leg
MIT powered knee prosthesis developed by the MIT Biomechatronics Group.
Primary outcome measures
Kinematic and Kinetic Measures of Lower-Limb Biomechanics
Time frame: An average of 2 sessions in the span of 1 week
Quantitative analysis of lower-limb biomechanics, including joint angles, ground reaction forces, joint torques, and mechanical power during level-ground walking, stair negotiation, and other functional tasks. Outcomes will be assessed using a motion capture system (e.g., Vicon), instrumented force plates, and embedded prosthesis sensors to evaluate gait symmetry, stability, and mechanical efficiency.
Spatiotemporal Gait Parameters
Time frame: An average of 2 sessions in the span of 1 week
Evaluation of spatiotemporal gait parameters during ambulation with the powered prosthesis. Specific measures include stride length, cadence, walking speed, and stance-to-swing ratio. Parameters will be obtained using a motion capture system (e.g., Vicon) and an instrumented walkway. Data will be analyzed to assess functional walking ability and compared to normative or baseline values
Assessment of Patient Ability to Control each Joint of the Prosthesis
Time frame: An average of 2 sessions in the span of 1 week
Assessment of volitional control of the powered knee and ankle joints via neural signals from the residual limb. Participants will perform isolated joint control trials in seated positions. Outcomes include joint command accuracy, latency, and repeatability, evaluated using surface electromyography (EMG) and motion capture. These measures will quantify the participant's ability to intentionally control each prosthetic joint.
Who can participate
This study lists these criteria on ClinicalTrials.gov. A study coordinator reviews eligibility during screening — this page does not determine whether you qualify.
Inclusion criteria
- Male or Female age 18-70.
- The patient must have a unilateral transfemoral 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.).
Where
- Cambridge, Massachusetts
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Frequently asked questions
What is a clinical trial?
A clinical trial is a research study that tests new medical treatments, drugs, devices, or procedures to determine their safety and effectiveness. Trials are carefully designed and monitored to protect participants while advancing medical knowledge.
Is it safe to participate?
Clinical trials follow strict safety guidelines and ethical standards. Trials must be reviewed and approved, and participants are closely monitored by medical professionals throughout the study. You can withdraw at any time if you choose.
Will I be compensated?
Many clinical trials offer compensation for your time, travel expenses, and inconvenience. The specific compensation varies by study and will be discussed during the screening process. All study-related medical care is typically provided at no cost to participants.
Will I receive a placebo instead of treatment?
When effective treatment exists, participants typically receive either the standard treatment plus the study intervention, or the standard treatment plus placebo. You would not be denied effective care. Placebos are primarily used when no proven treatment is available, or in addition to standard care. Your trial consent form will clearly explain what treatments you may receive.
Can I leave a trial if I change my mind?
Absolutely. Participation in clinical trials is completely voluntary. You have the right to withdraw from the study at any time, for any reason, without penalty or loss of benefits to which you are otherwise entitled.
How long does a clinical trial last?
Trial duration varies widely depending on the study design and purpose. Some trials last just a few weeks, while others may continue for months or years. The study coordinator will provide specific timeline information during your screening call.
Data: ClinicalTrials.gov · synced Oct 2, 2025 · Source of record for eligibility and locations