25-Year Check-In: does cartilage transplant last?
NCT ID NCT06238947
First seen Jun 25, 2026 · Last updated Jul 02, 2026 · Updated 3 times
Summary
This study looks at patients who had a cartilage cell transplant (using their own cells on a special material) for knee injuries between 1999 and 2006. Researchers will check their knee function, pain, and quality of life up to 25 years after surgery. The goal is to see how well this treatment holds up over the very long term.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- autologous chondrocyte transplantation on Hyalograft C biomaterial
- What this could lead to
- If successful, this study could confirm that this cartilage repair technique provides lasting relief and function for up to 25 years.
- What could go wrong
- This is an observational study, not a new treatment test. Results depend on past surgeries and may not apply to newer methods.
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 200 people
The number the study aims to enrol. It can still change while the study runs.
- Expected to start
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Sep 2026
An estimate. Start dates often move.
- Expected to finish
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Feb 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.
Who is studied
Patients treated with autologous chondrocyte transplantation delivered on biomaterial (Hyalograft C, Fidia, Abano Terme ) for full-thickness chondral defects (Outerbridge grade III to IV) at the level of femoral condyles, trochlea, patella, and tibial plateau
- Ages
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14 to 60 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 who underwent autologous chondrocyte transplantation surgery delivered on biomaterial (Hyalograft C) from 1999 to 2006 at the Rizzoli Orthopaedic Institute who met the following criteria at the time of surgery: * Full-thickness chondral defects (Outerbridge grade III - IV) and osteochondral defects at the femoral condyles, trochlea, patella and tibial plateau. * Patients aged between 14 and 60 years at the time of surgery. * Male and female sex. Exclusion Criteria: * Patients no longer available
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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 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.
More trials for these conditions
Other studies related to the condition(s) this trial covers.
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