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Blue dye study aims to find the right washout volume for infected knee implants

NCT ID NCT07324954

Knowledge-focused Sponsor: University of Miami Source: ClinicalTrials.gov ↗

What the study statuses mean

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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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 26, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This pilot study is testing how much irrigation fluid is needed to clear contaminants during revision knee replacement surgery for infection. Surgeons will apply a blue dye to the knee joint and wash it out in measured steps until the dye is gone. The goal is to gather data to design a larger trial on the best irrigation strategy. Only 20 adults having knee replacement surgery (with or without infection) will take part.

What this could mean

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

Active substance
Methylene blue dye (used as a marker, not a treatment)
What this could lead to
If successful, this study could help design a larger trial to determine the best irrigation volume for cleaning infected knee replacements during surgery.
What could go wrong
This is a very small pilot study with only 20 participants, using a blue dye to mimic infection. The results may not apply to real infections or lead to any change in practice.

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 1

The first testing in people. Mainly checks safety and dose, usually in a small group.

Participants

About 20 people

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

Started

Feb 2026

Expected to finish

Feb 2027

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: * Primary Total Knee Arthroplasty (TKA) or Primary Total Knee Arthroplasty (TKA) with Prosthetic Joint Infection (PJI) * 18 years * Able to provide informed consent Exclusion Criteria: * Incomplete irrigation documentation * Patients with severe immunosuppression (example: chemotherapy, neutropenia, Human Immunodeficiency Virus \[HIV\], steroid use) * Positive fungal, parasitic, or mycobacterial cultures * Methylene Blue allergy * Patients on Monoamine Oxidase (MAO) inhibitors, Selective Serotonin Reuptake Inhibitors (SSRI), Selective Norepinephrine Reuptake Inhibitors (SNRI), and/or Tricyclic Antidepressants (TCA) * History of methemoglobinemia * Glucose-6-Phosphate (G6P) Enzyme Deficiency * Chronic Kidney disease or Glomerular Filtration Rate (GFR) less than 30mL/min * Prisoners * Pregnant Woman

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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.

Irrigation Prosthetic-joint infection Total knee arthroplasty

How to take part

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  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

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Contacts and locations

Locations

  • UHealth Tower

    RECRUITING

    Miami, Florida, 33125, United States

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