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Can we predict who will do well after hip surgery?

NCT ID NCT04243447

Knowledge-focused Sponsor: Washington University School of Medicine 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study follows 747 young, active people (ages 14-40) who had hip surgery for femoroacetabular impingement (FAI). Researchers want to find out which patient traits, disease features, and surgical factors lead to the best outcomes. Participants fill out surveys about pain, function, and quality of life over time. The goal is to help doctors and patients make better decisions about surgery.

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 study could help doctors better predict which patients will benefit most from hip surgery for FAI.
What could go wrong
This is an observational study, not a treatment trial. It will not test a new therapy, and results may not apply to all patients.

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.

Participants

747 people

The number who actually took part.

Started

Feb 2020

Expected to finish

Nov 2025

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.

Who is studied

Skeletally mature patients being treated surgically for FAI after failing conservative treatment.

Ages

14 to 40 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. Age 14 - 40 years 2. Skeletally Mature 3. Failure of 6 weeks of conservative treatment 4. Primary surgery (Hip Arthroscopic Treatment) a. Surgical treatment of FAI with hip arthroscopy 5. Tonnis 0 -1 OA, with greater than 2 mm of joint space 6. Clinical diagnosis of FAI (cam or combined; alpha \>50 degrees) Exclusion Criteria: 1. Not a surgical candidate 2. Skeletally Immature 3. Acetabular Dysplasia (LCEA \< 20) 4. Tonnis 2+ OA 5. Previous ipsilateral hip surgery 6. Previous major hip trauma (hip fractures, hip dislocations) 7. Additional disease processes (e.g., Avascular Necrosis (AVN), synovial disease, Ehlers-Danlos Syndrome (EDS), neuromuscular disorders) 8. Unable to consent due to mental faculty 9. Pregnant women 10. Non-English speaking patients 11. Prisoners or other vulnerable populations

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Conditions

The condition(s) this trial relates to.

Femoracetabular Impingement osteoarthritis

As listed by the trial registrant

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

Femoracetabular impingement

Contacts and locations

Locations

  • Boston Children's Hospital

    Boston, Massachusetts, 02115, United States

  • CHU de Quebec - Universite Laval

    Québec, Quebec, Canada

  • Children's Hospital of Eastern Ontario

    Ottawa, Ontario, (+4) K1H 8L1, Canada

  • Mayo Clinic

    Rochester, Minnesota, 55902, United States

  • San Antonio Military Medical Center

    San Antonio, Texas, 78219, United States

  • Scottish Rite Hospital for Children

    Dallas, Texas, 75219, United States

  • The Ottawa Hospital

    Ottawa, Ontario, Canada

  • Twin Cities Orthopedics

    Edina, Minnesota, 55435, United States

  • University of Colorado

    Aurora, Colorado, 80045, United States

  • University of Iowa

    Iowa City, Iowa, 52242, United States

  • University of Michigan

    Ann Arbor, Michigan, 48106, United States

  • University of Wisconsin, Madison

    Madison, Wisconsin, 53706, United States

  • Washington University School of Medicine

    St Louis, Missouri, 63110, United States

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