10 years after ACL surgery: researchers use MRI to peek inside knees for early arthritis clues
NCT ID NCT04660955
First seen Jun 27, 2026 · Last updated Aug 25, 2026 · Updated 2 times
Summary
This study looks at 219 people who had ACL reconstruction surgery about 10 years ago. Researchers will use MRI scans to check the health of the knee cartilage and compare it to the uninjured knee. The goal is to learn more about how osteoarthritis develops after a knee injury.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- What this could lead to
- If successful, this study could help doctors understand how osteoarthritis develops after ACL injuries, potentially leading to better prevention or early treatment strategies.
- What could go wrong
- This is an observational study, not a treatment trial. It will not test any new drug or therapy, so it cannot directly improve patient outcomes.
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.
- Participants
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About 219 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Jan 2020
- Expected to finish
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Jan 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.
Who is studied
This patient cohort include patients who had ACL reconstruction 10 years ago and were recruited in the previous MOON onsite study based on the inclusion criteria listed above.
- Ages
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22 to 45 years
- Sex
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Anyone
- Healthy volunteers
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Accepted
You do not need to have the condition being studied to take part.
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: * Enrolled in MOON Onsite Study * 12-33 years old at baseline (22-45 years for this study); * ACL tear during a sport; no previous knee injury; * No graft rupture during follow-up; * No history of surgery on the contralateral knee; * No MRI contraindications Exclusion Criteria: * History of surgery on contralateral knee * Afraid of enclosed spaces
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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
1 site. The list below names each one and where it is.
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The official record
The full official record for this study. This one lists no contact details, but it is the first place any would appear.
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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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Cleveland Clinic
Cleveland, Ohio, 44125, United States
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