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Can a green dye reveal hidden blood flow in injured knees?

NCT ID NCT07793266

Knowledge-focused Sponsor: Henry Ford Health System 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Aug 28, 2026 · Last updated Aug 28, 2026

Summary

This trial tests whether a green dye called indocyanine green can help surgeons see blood flow in knee tissues during arthroscopic surgery. Participants receive a single dose of the dye through an IV, and a special camera system tracks where it goes in the knee, including the ACL and tendons. The study includes people aged 14 to 89 having knee arthroscopy, with a focus on different grades of ACL tears. The goal is to find out if this technique works and what dose gives the clearest picture.

What this could mean

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

Active substance
Indocyanine green (ICG) dye, given intravenously during knee arthroscopy
What this could lead to
If it works, this could give surgeons a real-time view of blood flow in knee tissues during arthroscopy, potentially improving how ACL tears and other knee injuries are assessed and treated.
What could go wrong
This is an early, small feasibility study, so the dye may not clearly show blood flow in all knee structures. The optimal dose and timing are still being worked out, and results may not change surgical 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 40 people

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

Started

Jun 2026

Expected to finish

Mar 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

14 to 89 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: Patients undergoing knee arthroscopy with a HFH Orthopaedic surgeon * Patients must be within ages of 14-89. Patient ages 14-17 will be included to capture an important sporting demographic who sustain ACL injuries which would stand to benefit from this intervention if successful. * Have signed an approved informed consent form for the study. * Be willing to comply with the protocol Exclusion Criteria: * Patient is less than 14 years of age or greater than 89 years of age * Patients who have had iodide-based radiology studies within the last seven (7) days prior to surgery * Previous surgical repair of targeted surgical area * Known allergy or history of adverse reaction to SPY Agent Green, ICG, * Subjects who have participated in another investigational study within 30 days prior to surgery. * Pregnant or lactating subjects. * Subjects who, in the Investigator's opinion, have any medical condition that may make the subject a poor candidate for the investigational procedure, or interfere with the interpretation of study results.

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Sign up to get updates when this study changes or when new studies for To assess the feasibility, visualization capability, and optimal dosing of icg fluorescence imaging for intraoperative assessment of knee tissue perfusion are added.

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As listed by the trial registrant

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

To assess the feasibility, visualization capability, and optimal dosing of icg fluorescence imaging for intraoperative assessment of knee tissue perfusion

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

  • Henry Ford Center for Athletic Medicine

    RECRUITING

    Detroit, Michigan, 48202, United States