TL;DR: Genicular artery embolization (GAE) is an interventional radiology procedure for painful knee osteoarthritis. In May 2026 the Society of Interventional Radiology published a position statement supporting its use in patients who have not improved with conservative therapy and who are not candidates for, or wish to delay, knee replacement — while explicitly calling for larger randomized trials. It is investigational, not FDA-approved for knee osteoarthritis, and coverage is inconsistent. Before you book one, ask these five questions and listen carefully to how they are answered.
Innovare Tx does not perform GAE. We evaluate patients for it and refer to interventional radiology, which is why we can afford to be blunt about it. Our full explainer is here: genicular artery embolization, explained.
1. Who is actually performing it, and how often?
GAE is not a joint injection and it is not a surgery. It is a catheter procedure performed from inside the arterial system by an interventional radiologist, usually through the femoral artery at the groin or the radial artery at the wrist, using live X-ray to steer a microcatheter into the small vessels around the knee.
That means the operator matters. Technique papers on GAE spend a striking amount of space on avoiding over-embolization — delivering more embolic material than the target needs, which is the mechanism behind the more serious reported complications. Ask who will hold the catheter, how many of these they have done, and what their approach to embolic volume is. A clinic that answers with a marketing coordinator instead of a name has answered.
2. Can you tell me what the evidence shows — including the negative trials?
This is the question that sorts clinics fastest. The honest answer in September 2026 sounds something like this: most of the published outcome data comes from single-arm studies; the sham-controlled randomized trials published so far have produced mixed results, with some suggesting a substantial nonspecific effect; and larger trials, including GENESIS II and the phase 3 LipioJoint-2 trial, are still running.
The Society of Interventional Radiology’s own position statement, published in the Journal of Vascular and Interventional Radiology on 12 May 2026, supports GAE as an option in a defined population and calls for larger randomized controlled trials to confirm the early data. Both halves of that sentence are the position. A clinic that quotes the first half and omits the second is selling, not informing.
3. Have I genuinely completed a conservative trial?
Read the population description again: patients who have not improved with conservative therapy. That is not a formality. It is the entry criterion, and it is the question you should ask yourself before you ask anyone else anything.
A genuine conservative trial is not three visits and a handout. It is a structured, progressed program over six to twelve weeks, with measurements taken at the start and compared at the end. The 2019 ACR and Arthritis Foundation osteoarthritis guideline makes strong recommendations for exercise, for weight loss in patients who are overweight or obese, for tibiofemoral bracing and for cane use where walking is limited. If you have not had those properly, you have not yet reached the group GAE is described for — and you may not need to. See what a real program contains in knee physical therapy.
4. What is the total cost, in writing, and what will insurance pay?
Because GAE is investigational for knee osteoarthritis, coverage is limited and inconsistent. That is not a reason to avoid it, but it is a reason to get the number before rather than after. Ask for the total — facility, physician, imaging, anesthesia, follow-up — in writing, and ask specifically what happens to the bill if the procedure is started and abandoned, or if a second session is recommended.
Ask the same clinic what it will bill your insurance and under what code. An organization that is confident about coverage will tell you plainly; one that says “we will fight for it” is telling you the answer is no.
5. What are the risks, and what happens if it does not work?
Pooled safety data describe transient skin discoloration over the knee as the most common event, resolving over a few weeks, with bruising or hematoma at the puncture site next. Reported rates vary widely between studies. The serious end of the spectrum relates to over-embolization and can involve skin injury and prolonged pain. Get that discussion from the person performing it.
Then ask the question people forget: what is the plan if this does nothing? A procedure offered without a stated next step is a procedure offered without a pathway. Anywhere you have your knee looked after should be able to tell you what happens on each branch.
What we do instead of selling it to you
We evaluate the knee properly, including in-office ultrasound and a review of your imaging. We make sure the conservative plan has genuinely been tried, because that is the population the procedure is described for. We explain what the evidence does and does not show. And if GAE is a reasonable thing for you to explore, we coordinate the referral and stay involved afterward for the rehabilitation and the rest of your care.
Separately, we do offer autologous orthobiologic procedures — PRP, PPP, BMAC and A2M, prepared from your own blood or bone marrow. Those are also investigational and also not FDA-approved for the treatment of any specific orthopedic condition, and the same five questions are worth asking about them. Including here.
Is genicular artery embolization FDA-approved?
No. GAE for knee osteoarthritis is investigational. Studies have run under FDA investigational device exemptions, and no embolic device is FDA-approved specifically for this indication. Any clinic offering it should say so without being asked.
Does Innovare Tx perform GAE?
No. It is performed by an interventional radiologist in an angiography suite. We evaluate, explain and refer. If you want a knee assessment first — which is the order the evidence itself implies — start with the Knee Program at our Addison clinic.
