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Hip scope vs. new hip: which surgery wins for early arthritis?

NCT ID NCT04166227

Disease control Sponsor: Western University, Canada 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
The trial has finished. Results may not be published yet.
Stopped early This study
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This status has not been confirmed recently, so it may be out of date.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 compared two surgical options—hip arthroscopy (a minimally invasive procedure) and total hip replacement—for adults aged 40 to 60 with early hip osteoarthritis. The goal was to see which surgery provides better pain relief and function. However, the trial was stopped early after enrolling only 42 people, so the results are limited.

What this could mean

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

Active substance
Hip arthroscopy and total hip arthroplasty (surgical procedures)
What this could lead to
If successful, this study could help determine whether hip arthroscopy or total hip replacement is more effective for managing early hip osteoarthritis in middle-aged adults.
What could go wrong
The trial was terminated early with only 42 participants, so results may be inconclusive. As a pilot study, findings are preliminary and 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.

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

42 people

The number who actually took part.

Started

Oct 2020

Finished

Apr 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

40 to 60 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. Between the ages of 40-60 years at the time of surgery. 2. Radiographic evidence of mild to moderate hip OA (Tönnis Gr 0 with MRI chondral wear, Tönnis Gr 1 and 2). 3. Patients must have completed ≥3 months of non-operative management with ongoing symptoms. Exclusion criteria: 1. Advanced OA, defined as \<2 mm joint space (Tönnis Gr 3) or those with acetabular or femoral head cysts. 2. Patients who are pregnant or may become pregnant around the time of surgery. 3. Prior arthroplasty of the contralateral hip. 4. Current or prior hip dysplasia (defined by a lateral centre edge angle of \<20 degrees). 5. Acetabular protrusio or coxa profunda, making arthroscopic access unsafe/unfeasible.

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Conditions

The condition(s) this trial relates to.

osteoarthritis, hip

As listed by the trial registrant

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

Hip osteoarthritis

Contacts and locations

Locations

  • Fowler Kennedy Sport Medicine Clinic and University Hospital

    London, Ontario, N6A 3K7, Canada

  • Fraser Health

    New Westminster, British Columbia, V3L 0E4, Canada

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