Can zapping muscles while you flex them ease knee arthritis?
NCT ID NCT06277570
First seen Sep 25, 2026 · Last updated Sep 25, 2026
Summary
Researchers are testing whether neuromuscular electrical stimulation, delivered while participants actively contract their muscles, can improve physical function, muscle strength, joint position sense, and quality of life in people with knee osteoarthritis. The trial enrolls adults aged 40 to 65 with moderate knee osteoarthritis. Participants receive either conventional physiotherapy alone or conventional physiotherapy plus the superimposed stimulation technique, and researchers measure outcomes like knee strength and joint awareness.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- superimposed neuromuscular electrical stimulation, a technique that adds electrical pulses to voluntary muscle contractions
- What this could lead to
- If it works, this could offer a non-invasive way to boost muscle strength and joint control for people with knee osteoarthritis, possibly alongside standard physiotherapy.
- What could go wrong
- The trial is small and early, so any benefits may be modest or not hold up in larger studies. Electrical stimulation can cause skin irritation or discomfort, and results may not apply to everyone with knee osteoarthritis.
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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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63 people
The number who actually took part.
- Started
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Oct 2023
- Finished
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Jun 2025
- 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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40 to 65 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: * Having grade 2-3 knee osteoarthritis according to Kellgren and Lawrence Classification, * Being between the ages of 40-65, , * Being literate * Volunteer Exclusion Criteria: * Having Grade 2 or higher osteoarthritis in the hip, ankle, or foot joint Presence of a history of knee-related surgery (arthroplasty, meniscectomy, etc.) * Having a deformity in the waist, leg, hip, knee, or ankle * Having any inflammatory rheumatic, neurological, vestibular, cardiopulmonary disease * Having active knee joint synovitis * BMI\>40 * Having a condition that is contraindicate for electrotherapy (malignancy, pacemaker, epilepsy, deep vein thrombosis, loss of protective sensation, etc.) * Having received physiotherapy in the last 3 months * Being diagnosed with a psychiatric disease * Having a cooperation problem that makes it difficult to comply with evaluation and treatment
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
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Faculty of Physiotherapy and Rehabilitation, University of Health Sciences
Ankara, Etlik, 06018, Turkey (Türkiye)
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