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Which knee implant works best for Second-Time replacement?

NCT ID NCT06782295

Symptom relief 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 knee implants (constrained condylar vs. posterior stabilized) used in revision knee replacement surgery. The goal is to see which one leads to better patient satisfaction and surgical outcomes. About 170 adults who need a second knee replacement will take part. Researchers will track how well patients feel and function over time.

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 170 people

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

Started

Jul 2025

Expected to finish

Jul 2038

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: * Patients between 18-80 years of age * Patients who are undergoing both femoral and tibial component revisions, or isolated femoral component revisions with a retained tibial component that is compatible with PS or CCK bearings * Patients who are at least 6-weeks out from primary TKA surgery, with complete pre-operative and post-operative knee radiographs obtained at standard of care perioperative visits (AP/lateral and patellar views) * Patients undergoing rTKA for indications including aseptic component loosening, flexion or extension coronal or sagittal instability, component malalignment, arthrofibrosis, patellar maltracking, reimplantation following single or two-stage exchange revision for prosthetic joint infection or bearing surface wear when femoral or tibial component revision is indicated. * The use of revision total knee arthroplasty systems which have PS and CCK bearing options including different degree options of coronal and rotational constraint (to be individually randomized per constrained option): * Zimmer Biomet Persona, NexGen, or Vanguard * Smith and Nephew Legion * DJO / Enovis Empowr * Stryker Triathlon * Link SymphoKnee * Depuy Attune sion Criteria: Exclusion Criteria: Patients undergoing rTKA with a hinged implant, or pre-operatively determined to require CCK bearing rTKA, \> 80 years of age, or those requiring rTKA less than 6-weeks from the primary TKA, Patients undergoing rTKA for bearing exchange only rTKA, isolated tibial component rTKA Patients with pre-operative diagnosis of extensor mechanism disruption or collateral ligament incompetence or with a compromised soft tissue envelope requiring pre-pre-operative plastic surgery evaluation and planned soft tissue coverage. \-

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Conditions

The condition(s) this trial relates to.

periprosthetic joint infection

As listed by the trial registrant

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

Aseptic loosening of prosthetic joint Femoral revision indicated Instability of prosthetic joint Reimplantation for periprosthetic joint infection Tibial component revision

How to take part

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

  1. The places running it

    1 site. 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

  • Rush University Medical Center

    RECRUITING

    Chicago, Illinois, 60612, United States

More trials for these conditions

Other studies related to the condition(s) this trial covers.