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Exercise may rival surgery for hip dysplasia pain

NCT ID NCT03941171

Symptom relief Sponsor: University of Aarhus Source: ClinicalTrials.gov ↗

What the study statuses mean

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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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 27, 2026 · Last updated Jun 27, 2026

Summary

This study tested whether hip surgery (PAO) followed by exercise is better than exercise alone for reducing pain in adults with hip dysplasia. 69 people aged 18-45 took part. The main goal was to see which approach improved hip pain and function more after 12 months.

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

69 people

The number who actually took part.

Started

Jul 2019

Finished

Sep 2025

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 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: 1. Patients aged 18-45 years and diagnosed with hip dysplasia referred from primary care to the Department of Orthopaedic Surgery at one of the two participating hospitals. 2. Considered eligible for PAO by a surgeon. 3. Radiographic verified hip dysplasia (CE-angle \<25 degrees and AI-angle \>10 degrees) and clinical symptoms. 4. Range of motion: internal rotation \>15 degrees, external rotation \>15 degrees, hip flexion \>110 degrees. 5. Able to commute to training sessions. Exclusion Criteria: 1. OA degree ≥1 on classification of Tönnis'. 2. CE-angle \<10 degrees. 3. Previous pelvic surgery for hip dysplasia (affected side). 4. Calvé Legg Perthes or epifysiolysis. 5. Simultaneous bilateral PAO. 6. Previous surgery for herniated disc, spondylodesis, arthroplasty of hip, knee or ankle. 7. Previous surgery of the hip (tenotomy of iliopsoas tendon, z-plastic of the iliotibial tract or hip arthroscopy) in index leg. 8. Neurological or rheumatoid diseases that affect the hip function. 9. Inadequacy in written and spoken Danish or Norwegian. 10. Body Mass Index (BMI) \>25 in Aarhus and BMI \>30 in Oslo and Odense

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Conditions

The condition(s) this trial relates to.

developmental dysplasia of the hip Hip Dislocation

As listed by the trial registrant

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

Hip dysplasia

Contacts and locations

Locations

  • Lisa Urup Tønning

    Aarhus N, Central Jutland, 8200, Denmark

  • Odense University Hospital

    Odense, Fyn, 5000, Denmark

  • Oslo University Hospital

    Oslo, 0450, Norway

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