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New hip implant aims to stop joints from popping out after repeat surgery

NCT ID NCT04090359

Disease control Sponsor: Rush University Medical Center 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 compares two types of hip implants in people who need a repeat hip replacement (revision). One implant has a special 'dual mobility' design meant to lower the risk of the hip dislocating. About 322 adults will be randomly assigned to get either the dual mobility implant or a standard single-bearing implant. The main goal is to see which group has fewer dislocations in the first year after surgery.

What this could mean

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

Active substance
Dual mobility acetabular cup implant
What this could lead to
If successful, this could provide a better option for people needing repeat hip replacement, reducing the chance of the new joint popping out of place.
What could go wrong
This is a relatively small, early-phase trial comparing two device types. Results may not apply to all patients, and there are standard surgical risks like infection or implant loosening.

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

Phase 4

Runs after approval, following long-term safety and how well the treatment works in everyday use.

Participants

About 322 people

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

Started

Sep 2017

Expected to finish

Nov 2036

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

18 years and older

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: * Any patient older than 18 years of age scheduled for a revision THA, including revision of both components, conversion of a hip resurfacing to THA, conversion of a hemiarthroplasty to THA, and revision of single components which allow implantation of dual-mobility bearings. In addition, patients undergoing reimplantation of a total hip arthroplasty following a two-stage revision for periprosthetic infection will also be included. Only patients with an acetabular shell diameter capable of accommodating at least a 36mm femoral head will be included. Exclusion Criteria: * Less than 18 years of age, primary THA, * conversion of non-arthroplasty femoral neck fracture fixation to THA, * patients unwilling to participate. * patients where the surgeon makes the intraoperative decision to use a constrained liner will be excluded.

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Conditions

The condition(s) this trial relates to.

Hip Dislocation

As listed by the trial registrant

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

Dislocation, hip

How to take part

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

  1. The places running it

    2 sites. 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

  • New York University Medical Center

    NOT_YET_RECRUITING

    New York, New York, 10003, United States

  • Rothman Institute

    RECRUITING

    Philadelphia, Pennsylvania, 19107, United States

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