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Kneecap dislocation: is early surgery better than rehab?

NCT ID NCT06926699

Disease control Sponsor: McMaster University 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 This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 pilot study tests whether early surgery to repair a torn ligament in the knee works better than rest and physical therapy for young people who have dislocated their kneecap for the first time. About 30 patients aged 10-25 will be randomly assigned to either surgery or rehab and followed for one year. The goal is to see which approach reduces repeat dislocations, pain, and knee problems.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
Medial Patellofemoral Ligament (MPFL) Reconstruction surgery
What this could lead to
If successful, this could show that early surgery reduces repeat kneecap dislocations and long-term knee problems compared to rehab alone.
What could go wrong
This is a very small pilot study with only 30 participants, so results may not apply to everyone. Surgery also carries risks like infection or stiffness.

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 30 people

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

Expected to start

Jan 2026

An estimate. Start dates often move.

Expected to finish

Dec 2027

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

10 to 25 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. Males and female patients under the age of 25 inclusive but greater than 10 years of age inclusive 2. Patients with first-time traumatic lateral patellar dislocation presenting within 6 months from time of injury 3. Lateral patellar dislocation confirmed by radiography, MRI demonstrating sequela of lateral patellar dislocation after injury to the knee, demonstration of patellar apprehension, J-sign or patellar glide grade 3 or greater on physical exam following injury to the knee 4. Patients who have the ability to speak, understand, and read English 5. Provision of informed consent or parental consent Exclusion Criteria: 1. Previous dislocation episodes or instability of the affected patella 2. Previous surgeries involving the affected knee 3. History or clinical exam findings of generalized ligamentous laxity (defined as Beighton score of 4 or more points) 4. TT-TG distance \>20mm as determined by MRI 5. Evidence of severe trochlear dysplasia on MRI as determined by Dejour classification type D dysplasia 6. Loose bodies or osteochondral fractures as confirmed on MRI 7. A neurovascular injury of the affected leg 8. Patients who will likely have problems, in the judgment of the investigator, with maintaining follow-up 9. Any other reason(s) the investigator feels is relevant for excluding the patient 10. Patients requiring concomitant arthrotomy for osteochondral fracture fixation (however microfracture and arthroscopic loose body removal for loose bodies found on arthroscopic assessment are not exclusion criteria)

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Conditions

The condition(s) this trial relates to.

Patella Fracture Patellar Dislocation

As listed by the trial registrant

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

Patellar (or kneecap) instability and mal-alignment Patellar dislocation

How to take part

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

  1. 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 ↗

  2. 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.