Genicular Artery Embolization for Knee Osteoarthritis

This study is looking at a procedure called Genicular Artery Embolization (GAE) using Embosphere Microspheres to treat knee pain caused by mild-to-moderate osteoarthritis (OA). OA happens when the protective cartilage in your knee wears down. GAE involves guiding a small tube (catheter) to the arteries in your knee to help with pain. The study wants to see if GAE is safe and effective. You may be able to join if you are 40-80 years old, have mild-to-moderate knee OA, experience at least 5/10 pain, and haven't found relief with other treatments for at least 3 months. The study will measure your safety and pain levels over time.

Study design
This is an interventional study with a planned enrollment of 15 participants. The study does not specify if it is randomized or blinded.
What's involved
You would be in this study for about 3 years, including a screening visit, the GAE procedure, and six follow-up visits.
Compensation
Not stated in the trial record.
Follow-up
Your safety will be checked at 1, 3, and 6 months. Your pain levels will be checked at 1, 3, 6, 12, 24, and 36 months after the procedure.

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NCT07537153

Genicular Artery Embolization for Knee Osteoarthritis

Recruiting
NAAges 40–80InterventionalTreatment
Northwestern University
~15 participants
Updated 2026-07-14 on ClinicalTrials.gov
What's tested:Embosphere Microspheres

At a glance

Recruiting sites
1 of 1 listed site is recruiting right now
RecruitingSuspended, closed, or not yet open
What they're measuring
Patient safety endpoints
Measured over Screening/baseline, 1, 3, and 6 months
+3 more outcomes measured
Osteoarthritis
Knee Osteoarthritis

NCT07537153

Where you'd take part

This study runs at 1 site. They're the same protocol — you choose where, and that choice sets who your contact draft is addressed to.

  • Northwestern University

    Chicago, Illinoisstudy coordinator listed

    Recruiting

Sites open and close at different times, so the status above is per site — it can differ from the study's overall status.

  • Robert Lewandowski, MD · PRINCIPAL_INVESTIGATOR · Northwestern University

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Eligibility criteria

Inclusion

Age 40-80 years
Mild-to-moderate knee OA as determined by radiographs demonstrating Kellgren- Lawrence grade 2-3
Self-reported pain of at least 5/10 VAS questionnaire
Failure of conservative therapy, such as pain medications, for at least 3 months
Patient must understand and sign the informed consent
Patient can comply with the proposed follow-up schedule
Patient can follow the post-operative management

Exclusion

History of rheumatoid arthritis
Renal insufficiency precluding angiography (GFR \< 50 mL/min)
Irreversible coagulopathy
Previous knee arthroplasty on the intended knee
Existing knee joint infection
Kellgren-Lawrence grade 1 or 4
Severe atherosclerosis as manifest by claudication and/or diminished peripheral pulses
Life expectancy \< 6 months
Infectious arthritis
Allergy to iodinated contrast resulting in anaphylaxis
Pregnant or interested in becoming pregnant three months from the date of the GAE procedure
Involved in litigation or worker's compensation claims
  • Patient safety endpointsScreening/baseline, 1, 3, and 6 months

    Primary safety endpoints include: 1\. Incidence and severity of adverse events (AEs). These include: 1. Non-target embolization (e.g., distal leg) 2. All transient intra- and post-procedure events (e.g., skin changes) 3. Death

  • Objective clinical endpoints - Cone beam computed tomographyImmediately pre-and post-embolization

    Change in enhancement on cone beam computed tomography (CT)

  • Objective clinical endpoints - VASScreening/baseline, 1, 3, 6, 12, 24 and 36 months

    Change in Visual Analogue Scale (VAS), a measurement instrument where 0 represents the minimum value (e.g., no pain) and 100 (or 10) represents the maximum value (e.g., worst imaginable pain). Consequently, higher scores indicate a worse outcome (more pain/severity), while lower scores indicate a better outcome

  • Objective clinical endpoints - WOMACScreening/baseline, 1, 3, 6, 12, 24 and 36 months

    Change in Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC), a measurement instrument designed to evaluate pain, stiffness, and physical function in patients with hip or knee osteoarthritis. Higher scores on the WOMAC indicate a worse outcome (greater pain, stiffness, and functional limitations).