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Hip dysplasia surgery showdown: does adding arthroscopy help?

NCT ID NCT03481010

Knowledge-focused Sponsor: Ottawa Hospital Research Institute 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 is testing whether adding hip arthroscopy to a standard hip realignment surgery (PAO) improves outcomes for people with hip dysplasia. About 204 participants will be randomly assigned to receive either PAO alone or PAO plus arthroscopy. Researchers will measure quality of life and hip function over time to see which approach works better.

What this could mean

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

Active substance
Periacetabular osteotomy (PAO) with or without hip arthroscopy
What this could lead to
If it works, this could show whether adding hip arthroscopy to PAO improves recovery and quality of life for people with hip dysplasia.
What could go wrong
This is a relatively small, early-stage trial comparing two surgical procedures. The results may not apply to all patients, and there are standard surgical risks like infection or complications.

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 204 people

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

Started

Apr 2018

Expected to finish

Dec 2030

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

16 to 50 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: * Skeletally mature patient undergoing Bernese periacetabular osteotomy for symptomatic acetabular dysplasia/hip instability * Pre-Operative MRI at 3T and/or gadolinium MR arthrogram * Age, 16-50 years old * Patient capable of giving informed consent Exclusion Criteria: * Prior hip/pelvis surgery of any kind on the surgical side * Prior hip arthroplasty surgery on either side * Radiographic evidence of arthritis (i.e. Tönnis grade =2) * Known connective tissue disorder (e.g. Ehlers-Danlos Syndrome, etc.) * Known neuromuscular disorder (e.g. Cerebral Palsy, Spina bifida, etc.) * Known skeletal dysplasia (e.g. Achondroplasia, Multiple Epiphyseal Dysplasia, etc.) * Cognitive impairment that prevents accurate completion of patient-reported outcome questionnaires. * Patient unable/unwilling to complete all required follow-up visits * Concurrent proximal femoral osteotomy and/or surgical hip dislocation

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Conditions

The condition(s) this trial relates to.

developmental dysplasia of the hip developmental dysplasia of the hip 1 Hip Dislocation

As listed by the trial registrant

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

Hip dysplasia

How to take part

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

  1. The places running it

    7 sites in 2 countries. 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

  • CHU de Québec - Université Laval

    RECRUITING

    Québec, G1J 1Z4, Canada

  • Children's Hospital of Eastern Ontario

    RECRUITING

    Ottawa, Ontario, K1H 8L1, Canada

  • Hospital for Special Surgery

    RECRUITING

    New York, New York, 10021, United States

  • Northwestern University

    RECRUITING

    Chicago, Illinois, 60611, United States

  • Ottawa Hospital Research Institute

    RECRUITING

    Ottawa, Ontario, K1H8L6, Canada

  • The Washington University

    RECRUITING

    St Louis, Missouri, 63130, United States

  • William Beaumont Hospital

    RECRUITING

    Royal Oak, Michigan, 48073, United States

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