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Knee surgery study questions need for extra ligament release

NCT ID NCT01719666

Knowledge-focused Sponsor: Hospices Civils de Lyon 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
Running, but no longer taking on new participants.
Completed This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 26, 2026 · Last updated Jun 26, 2026

Summary

This study looked at 140 people with recurrent kneecap dislocation who needed surgery. Half received the standard MPFL reconstruction, and the other half had an additional lateral retinaculum release. The goal was to see if the extra release improves kneecap alignment or outcomes. The researchers hypothesized it might not make a difference.

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 could show that the simpler surgery (without the extra release) is just as effective, reducing unnecessary procedures.
What could go wrong
This is a completed trial with 140 patients, but it is testing a surgical technique, not a new drug. The results may not apply to all patients or surgeons.

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

140 people

The number who actually took part.

Started

Nov 2011

Finished

Sep 2024

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 45 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: * age between 18yo and 45yo * indication for MPFL reconstruction * unilateral or bilateral indication Exclusion Criteria: * indication for bony procedures * previous surgery for PF disorders * patient refusal

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Conditions

The condition(s) this trial relates to.

Joint Dislocations Patella Fracture

As listed by the trial registrant

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

Episodic patellar dislocation

Contacts and locations

Locations

  • Croix-Rousse Hospital, Hospices Civils de Lyon

    Lyon, 69004, France