Knee pain relief without pills? blood flow restriction exercise shows promise
NCT ID NCT07300384
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study tests whether doing leg exercises with a blood pressure cuff on the thigh can temporarily reduce pain in people with severe knee osteoarthritis who are waiting for knee replacement surgery. Forty-five participants will do two different exercise sessions (with either fixed or changing cuff pressure) to see which works better for pain relief. The goal is to find a simple, drug-free way to help manage pain before surgery.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- Blood flow restriction training with dynamic or fixed occlusion pressure
- What this could lead to
- If successful, this could point toward a non-drug, exercise-based way to temporarily ease pain for people with severe knee osteoarthritis.
- What could go wrong
- This is a small, early-stage study with only 45 participants, looking at immediate pain relief after a single session. It does not test long-term effects or whether it helps over weeks or months.
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 45 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Feb 2026
- Expected to finish
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Dec 2027
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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50 to 85 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.
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Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Age between 50 and 85 years * Diagnosis of severe gonarthrosis according to the clinical and radiographic criteria of the American College of Rheumatology guidelines. * On the waiting list for unilateral total knee replacement (TKR) surgery Exclusion Criteria: * Pain in the contralateral leg with an intensity ≥80/100 mm on the visual analog scale (VAS) during daily activities. * Previous hip or knee replacement surgery and osteotomy within the last year. * Autoimmune arthritis * Medical conditions that contraindicate exercise. * Participation in exercise programs (\>2 days/week with training at intensities of 10-15 1RM) in the previous six months. * History of stroke, brain surgery, major depression, or self-reported cognitive impairment that could affect performance in the study. * Cardiovascular, thrombotic, or vascular risk factors (uncontrolled hypertension, peripheral arterial disease, history of deep vein thrombosis or pulmonary embolism, heart failure, severe varicose veins, or uncontrolled anticoagulant therapy). * Skin or local alterations at the cuff application site (ulcers, open wounds, infections, lymphedema, or severe edema). * Inability to communicate normally or with impaired communication skills.
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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.
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
2 sites. 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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Faculty of Physiotherapy, University of Valencia
RECRUITINGValencia, Valencia, 46010, Spain
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University of Valencia
RECRUITINGValencia, Valencia, Spain
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