Genicular artery embolization in New Jersey is a minimally invasive procedure used for chronic knee pain from osteoarthritis when other treatments have not been enough. Dr. Dipan Patel, a double board-certified interventional pain physician, evaluates patients for this option at his offices in Clifton, Edison, West Orange, Jersey City, and Hazlet, New Jersey.
A Minimally Invasive Option for Chronic Knee Pain
Genicular artery embolization (GAE) is an image-guided procedure that reduces blood flow in selected small arteries that supply the lining of the knee. In osteoarthritis, those vessels can be associated with inflammation and pain. Early research, including a 2015 study by Okuno and colleagues and later U.S. work, describes using a thin catheter and embolic particles to close abnormal vessels around the joint. GAE is not knee replacement and does not cure osteoarthritis. Dr. Patel discusses it as one option for selected patients whose joint pain has continued despite conservative care.
How Does Genicular Artery Embolization Work?
The procedure is done through a small arterial puncture, often at the groin. Using live X-ray (fluoroscopy) and a contrast dye, the physician maps the genicular arteries and looks for abnormal vessel networks around the painful part of the knee. Tiny embolic particles are then delivered to reduce flow in those target vessels. The Bagla 2020 pilot and the GENESIS study used spherical microspheres for this purpose. Dr. Patel will review the setting, how long you should plan to be at the facility, and who should drive you home. The goal is to reduce inflammatory blood flow — and, for some people, pain — not to rebuild cartilage.
What GAE Can Offer:
- A minimally invasive, image-guided procedure without a joint implant
- Performed through a small arterial puncture, without a large incision
- Studied mainly in people with mild to moderate knee osteoarthritis and ongoing pain after conservative care
- Does not preclude later knee replacement if that becomes appropriate
- An option to discuss when injections and other non-surgical care have not been enough
What Does Genicular Artery Embolization Treat?
GAE is used for chronic knee pain from osteoarthritis, especially when pain has continued after measures such as activity changes, medicines, physical therapy, and often joint injections. NIAMS and MedlinePlus describe osteoarthritis as a wear-and-inflammation process in the joint; GAE aims at the abnormal blood vessels associated with that inflamed lining, not at replacing the joint. It is not a treatment for every cause of knee pain. Other options Dr. Patel already offers for knee symptoms include PRP injections and radiofrequency ablation.
Am I a Candidate for GAE?
You may be considered if you have chronic knee pain from osteoarthritis, imaging that supports that diagnosis, and symptoms that have not improved enough with conservative care. The main published studies enrolled people with mild to moderate radiographic disease (Kellgren–Lawrence grades 1–3), including the Okuno midterm study of 72 patients (95 knees) and a small U.S. sham-controlled trial. People with very advanced, end-stage arthritis were generally not the focus of those trials.
Candidacy also depends on your overall health, the blood vessels that can be safely reached, and your goals — including whether knee replacement is already the better next step. An evaluation with Dr. Patel is required. This page cannot determine whether GAE is appropriate for you.
What Happens During Genicular Artery Embolization?
After the skin over the access site is cleaned and numbed, a small catheter is advanced into the artery under fluoroscopy. Contrast dye is used to identify the genicular arteries that supply the painful area of the knee and any abnormal vessel networks. Embolic particles are then delivered to reduce flow in the chosen vessels, after which the catheter is removed and pressure is applied to the puncture site.
In the Bagla 2020 pilot, at least one genicular artery was embolized in all 20 patients. Technical success in the GENESIS two-year report was 87% (40 of 46 patients). You will receive specific instructions about eating, medicines, the procedure setting, and who should drive you home.
What Is Recovery Like After GAE?
The most commonly reported effect is temporary skin discoloration over the knee, which was self-limiting in the Bagla 2020 and GENESIS reports. Less often, temporary sensory changes in the foot, a groin hematoma at the puncture site, or — in one GENESIS case — a deep-vein thrombosis related to immobilization have been described. Dr. Patel will give you activity and follow-up instructions, including when you may return to walking, work, and exercise.
What Does the Research Show?
Evidence for GAE is promising but still growing, and individual results vary. In a 20-patient U.S. pilot, mean pain (VAS) improved from 76 mm at baseline to 29 mm at six months; the authors said further randomized studies were needed to separate treatment from placebo effect. A later multicenter sham-controlled study of 21 patients found greater pain reduction with GAE than with sham at one month. The GENESIS two-year follow-up (46 patients, single arm) reported a mean VAS of 58.63 at baseline and 37.7 at two years; nine patients later had knee arthroplasty. A larger sham-controlled trial, GENESIS II, is ongoing. GAE does not cure osteoarthritis, and improvement is not guaranteed.
Why Choose Dr. Patel for Genicular Artery Embolization?
Dr. Dipan Patel is a double board-certified interventional pain physician with fellowship training at NYU Langone. He specializes in minimally invasive treatments for chronic pain and will review whether GAE, another procedure, or continued conservative care is the better fit for your knee. He sees patients in Clifton, Edison, West Orange, Jersey City, and Hazlet, New Jersey. If you are living with chronic knee pain from osteoarthritis that has not responded enough to other treatments, schedule your consultation today to discuss your options. Call 973-777-5444.
Frequently asked questions
What is genicular artery embolization?
GAE is a minimally invasive procedure that reduces blood flow in selected small arteries around the knee (the genicular arteries). In osteoarthritis, the joint lining can develop extra blood vessels that are thought to contribute to inflammation and pain. Published studies, including work by Okuno and colleagues and a U.S. pilot by Bagla and colleagues, describe using a thin catheter and embolic particles to close those vessels. GAE does not replace the knee joint or cure osteoarthritis.
Who might be a candidate?
Published trials have mainly enrolled adults with mild to moderate radiographic knee osteoarthritis and ongoing pain after conservative care. The 2017 Okuno study included Kellgren–Lawrence grades 1–3. A small sham-controlled trial used similar criteria. Candidacy is decided only after Dr. Patel reviews your history, exam, and imaging — not from this page alone. Related options on this site include joint injections, PRP, and radiofrequency ablation.
Is GAE FDA-cleared for knee osteoarthritis?
As of this writing we have not found an FDA 510(k), PMA, or De Novo authorization that lists genicular artery embolization for knee osteoarthritis as a specific indication. A larger sham-controlled trial, GENESIS II (NCT05423587), is still underway. Dr. Patel can explain what this means for your care.
What are the usual risks?
The most commonly reported effect in published series is temporary skin discoloration over the knee. In the Bagla 2020 pilot (20 patients), self-limiting skin discoloration occurred in 13 patients, and two patients had plantar sensory changes that resolved within 14 days. The GENESIS two-year follow-up also recorded self-limiting skin discoloration, a self-limiting groin hematoma, and one deep-vein thrombosis attributed to immobilization. No osteonecrosis was reported on follow-up MRI in that study. Dr. Patel will review risks that apply to you.
How is GAE different from injections or knee replacement?
GAE is an arterial procedure. It is not a joint injection and it is not knee replacement surgery — it does not remove bone or implant a prosthesis. Some patients in the GENESIS follow-up later went on to knee arthroplasty, and the authors reported no additional operative complexities in those cases. The right path depends on the severity of your arthritis and your goals, which Dr. Patel will discuss with you.
How long can improvement last?
Evidence is still developing, and individual results vary. A 20-patient U.S. pilot study reported lower pain and WOMAC scores at six months and called for larger randomized trials. A small sham-controlled study found greater pain reduction with GAE than with a sham procedure at one month. In the GENESIS two-year report, mean pain scores were lower at two years than at baseline in this single-arm study. GAE does not cure osteoarthritis, and relief is not guaranteed.
Does insurance cover GAE?
Coverage varies by plan and is changing as more evidence is published. Some insurers may still treat GAE for knee osteoarthritis as investigational. Our office can help check your benefits after an evaluation. For questions, call 973-777-5444.