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Knee pain breakthrough? new study tests artery blocking procedure

NCT ID NCT06940479

Symptom relief Sponsor: University of Colorado, Denver 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 tests a procedure called genicular artery embolization (GAE) to see if it can reduce knee pain and inflammation in adults with knee osteoarthritis. Researchers will compare knee fluid samples and MRI scans before and after the procedure to see if changes in inflammation match how much pain improves. The goal is to understand if GAE works by lowering inflammation in the knee.

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

About 46 people

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

Started

Jul 2025

Expected to finish

Jul 2028

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: * Age ≥ 18 years * Planned to undergo genicular artery embolization to treat knee osteoarthritis. * Osteoarthritis on knee radiograph (Kellgren-Lawrence score 1-3) within the last 6 months * Persistent moderate to severe knee pain (visual analog scale \[VAS\] \>3) for at least 6 months * Pain refractory or intolerant to conservative therapies (e.g. analgesia, exercise, weight-loss, joint injections, physical therapy) * BMI \< 35 kg / m2 * Stated willingness to comply with study procedures and availability for the duration of the study Exclusion Criteria: * Coagulation disturbances not normalized by medical treatment (INR \>1.8 and platelets \<50 x 10\^9/L) * Receiving medications for anticoagulation which cannot safely be held for the procedure (e.g ASA for 5 days, Lovenox for 24 hours, Eliquis for 4-6 days depending on creatinine clearance * Allergy to iodinated contrast agents not responsive to steroid premedication regimen * Active knee joint infection * Acute knee injury with surgical indication (MRI evidence of acute fracture or ligamentous injury of the knee) * Prior total or partial knee replacement in the subject knee * Intra-articular steroid injection within 2 months * Untreated lower extremity vascular arterial disease * Untreated venous insufficiency * Presence of medical condition with life expectancy less than 6 months * Patients who have undergone previous lower extremity embolization * Patients with renal insufficiency based on an estimated GFR\<45 ml/min who are not already on hemodialysis * Patients who are pregnant or intend to become pregnant within 6 months of the procedure * American Society of Anesthesiologists classification \> 3 * Less than 3 mm of synovial fluid in the lateral suprapatellar recess on MRI or US

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Conditions

The condition(s) this trial relates to.

osteoarthritis, knee

As listed by the trial registrant

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

Knee osteoarthritis

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

  • University of Colorado Anschutz Medical Campus

    RECRUITING

    Aurora, Colorado, 80045, United States

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