Can a cuff ease knee pain? new study tests blood flow restriction
NCT ID NCT06637124
First seen Jun 24, 2026 · Last updated Jun 27, 2026 · Updated 1 time
Summary
This study compares two types of blood flow restriction therapy (using a cuff to limit blood flow during exercise) against standard moderate strength training in 75 people with knee osteoarthritis. Participants will do supervised exercises twice a week for 8 weeks. The goal is to see which approach best reduces pain and improves muscle strength and daily function.
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 therapy device (Smart Cuffs 4.0)
- What this could lead to
- If it works, this could offer a new exercise option that reduces knee pain and improves strength without heavy weights.
- What could go wrong
- This is a small, early-stage trial with only 75 people. Results may not apply to everyone, and the therapy may not be better than standard exercises.
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
-
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 75 people
The number the study aims to enrol. It can still change while the study runs.
- Started
-
Oct 2024
- Expected to finish
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May 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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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: * Patients diagnosed with chronic knee osteoarthritis referred by orthopedic surgeons participants of both genders age are 40-65. * Patients with grade 2 and 3 OA of the knee, according to radiologic evaluation * If both knees diagnosed as OA, the most affected one will be selected. * Diagnosis of Knee OA who had knee pain and functional disabilities for at least three months, according to American College of Rheumatology classification at screening visit. * Visual Analogue Scale (VAS) at rest score of ≥40 mm. * Arabic version of the western WOMAC (ArWOMAC) scores (average 37). * Moderate Physical activity score on the IPAQ (between 3.0 and 7.9 METS). Exclusion Criteria: * Moderate to significant knee synovitis * Hot or red knee * History and/or physical examination findings compatible with the internal derangement of knee. * Knee pain that is initiated or increased with knee activity/exercise and finished or decreased with knee resting. * Other muscular, articular, or neurological condition affecting lower limb function. * Patients with any previous knee surgeries or fractures of lower limb * Patients who had undergone arthroscopy or treatment with intra-articular hyaluronic acid during the previous 6 months. * Psychological or psychiatric disorders that may affect a subject's participation in the study. * Participants with congenital musculoskeletal lower limb deformity. * Participated in other intervention studies on the past 6 months to screening * Participants with contraindications to blood flow Restriction Training.
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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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CairoU
Cairo, Giza Governorate, 12611, Egypt
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