Bionic knee study aims to make walking less tiring for amputees
NCT ID NCT05831696
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study tests whether a powered, computer-controlled prosthetic knee helps people with above-knee amputations walk more efficiently than their usual prosthesis. Researchers will measure oxygen use during walking on flat and sloped surfaces, along with balance confidence and effort. The study involves 12 adults who already use a prosthetic leg daily.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Phase
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Not a phased trial
Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.
- Participants
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About 12 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Feb 2023
- Expected to finish
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Dec 2026
An estimate. End dates often move.
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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18 to 75 years
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Males and Females with unilateral knee disarticulation or transfemoral (KD/TF) amputation. * a body mass greater than 49Kg and less than 117Kg * 18-75 years of age * Have an ambulation potential of K3 or K4 * Use a prosthesis daily for walking or sports activities * No less than six months of experience with a prosthesis * No socket issues or changes in the last six weeks * No residual limb pain affecting functional ability. Exclusion Criteria: * Cannot walk at different speeds (MCFL K0-K2) * Limb-loss below the knee or through the hip * More than one amputation. * Uses an assistive device for walking * Uncontrolled edema in leg compartments * Compromised skin of the residual limb or contralateral foot * Are 180 days or less post-amputation * Pregnant (self-reported)
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As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
1 site. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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Loma Linda University
RECRUITINGLoma Linda, California, 92354, United States
More trials for these conditions
Other studies related to the condition(s) this trial covers.
- How does losing more of a leg change strength and balance? researchers measure the difference
- Walking while thinking: a new training approach may help amputees stay steady
- Can a special rehab program help more amputees walk again?
- Mind-Controlled bionic leg: a giant leap for amputees
- New adjustable socket could help veterans walk more comfortably
- Bionic knee gets a software Tune-Up: will it help amputees walk better?