Can bone marrow cells help knee cartilage heal after surgery?
NCT ID NCT05053646
First seen Sep 11, 2026 · Last updated Sep 11, 2026
Summary
Researchers are testing whether adding a marrow venting procedure to standard meniscal repair surgery improves knee function in adults with torn knee cartilage. Participants are 18 to 45 years old with a single suturable meniscal tear. Both groups receive standard arthroscopic repair with sutures, and one group also receives marrow venting, where a surgeon makes small holes in the bone near the knee joint to release marrow cells. The trial measures knee function and symptoms over two years to see if the added step helps recovery.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- marrow venting, a procedure that releases bone marrow cells into the knee during meniscal repair surgery
- What this could lead to
- If it works, surgeons could add a low-risk step to standard meniscal repair that helps patients recover better knee function and possibly avoid re-tearing.
- What could go wrong
- Marrow venting may add no benefit over standard repair alone, and any extra surgical step carries small risks such as bleeding, infection, or knee stiffness. The trial is small and results may not apply to everyone.
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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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About 80 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Dec 2021
- Expected to finish
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Oct 2030
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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16 to 50 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: * Arthroscopic confirmed suturable meniscal tears, * Monolateral meniscal tears, * 18-45 years, * BMI\>18,5 and \<35 kg/m2, * Ability to give informed consent by signature. Exclusion Criteria: * Bilateral meniscal tears requiring treatment, * Associated ligament lesions requiring treatment, * Associated cartilage lesions (Outerbridge \> 2), * Knee axis deformities requiring correction * Generalized ligamentous laxity, * Radiographic knee ostheoarthritis, * Other reasons for knee pain, * Pregnant or lactating women, * Serious systemic diseases such as cardiac, hepatic or renal failure, rheumatic diseases, non-compensated diabetic, psychological illnesses, central or peripheral neurological diseases, and autoimmune diseases, * Enrolled in another ongoing clinical trial.
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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
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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Clinica Ars Medica
RECRUITINGLugano, Switzerland
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Ente Ospedaliero Cantonale
RECRUITINGLugano, 6900, Switzerland
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