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Knee surgery showdown: which graft keeps the kneecap in place best?

NCT ID NCT05706363

Disease control Sponsor: Aarhus University Hospital Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
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 This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 compares two surgical methods to fix a loose kneecap that keeps popping out. One method uses a standard hamstring tendon graft with a screw, while the other uses a newer quadriceps tendon graft with an anchor. Researchers will track 90 patients aged 15-40 to see which technique provides better stability and less pain after surgery.

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 90 people

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

Started

Jul 2017

Expected to finish

Jul 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

15 to 40 years

Sex

Anyone

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

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: * Patients between 15 and 40 years of age with chronic tendency to lateral patellar dislocation (defined as 2 or more verified dislocation cases) * The growth zones must be found closed - verified by MRI scan Exclusion Criteria: * Patients with known rheumatoid arthritis. * Patients with arthroscopically detected osteoarthritis (grade 3 cartilage lesion) * Inability to follow a normal rehabilitation regime. * Previous ligament surgery in injured knees.

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Conditions

The condition(s) this trial relates to.

Patellar Dislocation

As listed by the trial registrant

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

Patellar dislocation

Contacts and locations

Locations

  • Division of Sports Trauma, Palle Juul-Jensens Boulevard 99

    Aarhus N, 8200, Denmark

More trials for these conditions

Other studies related to the condition(s) this trial covers.