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Knee realignment surgery: what happens to the kneecap years later?

NCT ID NCT06251752

Knowledge-focused Sponsor: Istituto Ortopedico Rizzoli Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study follows 50 people who had knee realignment surgery (high tibial osteotomy) for early knee arthritis. Researchers want to see how the surgery affects the kneecap joint and arthritis progression over the long term. Participants are under 65 and had the surgery at least 5 years ago. The goal is to learn more about outcomes, not to test a new treatment.

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

About 50 people

The number the study aims to enrol. It can still change while the study runs.

Started

Oct 2020

Expected to finish

Dec 2026

An estimate. End dates often move.

Lead sponsor

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

18 to 65 years

Sex

Anyone

Healthy volunteers

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

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: 1. Diagnosis of medial unicompartmental knee osteoarthritis (Outerbridge III-IV) 2. Follow-up \> 60 months 3. Completeness of clinical and radiographic documentation. 4. Previous valgus osteotomy procedure (MOW-HTO or LCW-HTO) 5. Age \<65 years Exclusion Criteria: 1. Patients with previous injuries affecting the involved lower limb. 2. Patients with prior traumatic, septic, and rheumatoid arthritis. 3. Patients with previous alterations of the patellofemoral joint. 4. Patients with knee ligament injuries. 5. Patients with confirmed neuromuscular disorders or psychomotor disturbances. 6. Patients with congenital generalized hypermobility syndrome. 7. Patients with severe pathologies in other organs or systems limiting activities of daily living (ADL). 8. Patients who refuse to participate in the study.

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Conditions

The condition(s) this trial relates to.

osteoarthritis, knee

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Deformity knee Knee osteoarthritis

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    1 site. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. 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

  • IRCCS Istituto Ortopedico Rizzoli

    RECRUITING

    Bologna, 40136, Italy

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