If you have knee osteoarthritis, you have probably been handed two options: manage the pain until you can’t anymore, or get a knee replacement. You have likely already tried the first path. Braces, physical therapy, over-the-counter pain relievers, gel or cortisone injections, maybe supplements. When those stop working, surgery starts to feel inevitable.
It isn’t. There is a third option that treats knee arthritis pain without surgery, and most people have never heard of it. It’s called genicular artery embolization, or GAE. (Not sure your knee pain is even arthritis? Start with what arthritis in the knee actually feels like.)
What Is Genicular Artery Embolization (GAE)?
GAE is a minimally invasive, image-guided procedure that reduces knee pain caused by osteoarthritis. It is performed by an interventional radiologist, not a surgeon, through a tiny needle-poke access point rather than an open incision. There is no general anesthesia and no hospital stay, and patients go home the same day.
GAE is designed for osteoarthritis, the “wear and tear” form of knee arthritis. It is not a first-line treatment for rheumatoid or gout-related knee arthritis. It also belongs to a broader family of joint pain treatments that use the same approach.
How Genicular Embolization Works for Knee Osteoarthritis
Arthritis pain isn’t only about worn cartilage. As knee osteoarthritis progresses, the body grows extra tiny blood vessels around the knee. These abnormal vessels feed inflamed tissue and irritated nerves, which drives a lot of the ongoing pain.
GAE targets that process directly. Using real-time imaging, the physician guides a thin catheter to those overactive vessels and injects microscopic particles to reduce the excess blood flow.
Less inflammation = less pain signaling.
Our guide to finding relief from chronic knee pain walks through the mechanism in more detail.
No cartilage is cut. No joint is replaced. And unlike some ongoing treatment plans, GAE does not rely on steroids or opioids.
Who Is a Candidate for GAE?
GAE is worth exploring if you have knee osteoarthritis and conservative treatments are no longer giving you enough relief. That includes people who have worked through physical therapy, injections, and medication without lasting results.
Even severe arthritis doesn’t automatically rule you out. Published research has studied GAE in patients with mild to severe knee osteoarthritis whose pain persisted despite at least three months of conservative care. Many candidates are people who want to delay or avoid knee replacement, or who aren’t good surgical candidates in the first place.
Not sure if you might qualify? Take our quick Joint Pain Quiz to see if GAE could be a fit, then confirm with a consultation and imaging review.
What to Expect: Recovery and Results
GAE is an outpatient procedure. The access site is small, and patients return home the same day and resume light activity within a day or two.
Relief tends to build gradually. Rather than an overnight fix, many patients notice their pain easing over the weeks following the procedure as inflammation settles.
In a 2025 study published in the Journal of Vascular and Interventional Radiology, GAE produced significant and sustained pain improvement in patients with symptomatic knee osteoarthritis, with most reporting clinically meaningful relief at one year.
Our patient’s guide to GAE covers the full timeline. Results vary from person to person, and your physician will walk you through what is realistic for your case.
Is It Safe? Understanding the Risks
GAE has a strong safety profile and is far less invasive than open knee surgery. Because there is no large incision, the risks tied to major surgery and general anesthesia are largely avoided. In published trials, adverse events were predominantly mild and temporary.
The most common side effects are minor: short-lived bruising or skin discoloration near the knee, or mild soreness at the access site. Serious complications are uncommon. Your physician will review the full picture with you before you decide, and as always, talk to your doctor about what is right for you.
Non-Surgical Alternatives Before Knee Replacement
GAE isn’t the only non-surgical tool, and it usually isn’t the first one you’ll try. A typical path looks like this:
- Activity changes, weight management, and physical therapy
- Over-the-counter or prescription anti-inflammatory medication
- Bracing and supportive devices
- Cortisone or gel (hyaluronic acid) injections
These help many people, especially early on.
GAE enters the picture when those options stop delivering but you still aren’t ready for, or don’t want, a replacement. Think of it as the step between conservative care and surgery, not a replacement for either.
Frequently Asked Questions
Does genicular artery embolization actually work?
Research on GAE for knee osteoarthritis has been encouraging, with most patients in published studies reporting meaningful, sustained pain reduction at one year. In 2026, the Society of Interventional Radiology released a position statement supporting GAE as a treatment option for people with knee osteoarthritis who have not found relief from conservative care and want to avoid or delay knee replacement.
How long is recovery after GAE?
Patients go home the same day (the procedure itself takes less than 90 minutes) and return to light activity within a day or two.
What are the risks of genicular artery embolization?
Most side effects are minor and temporary, such as bruising or skin discoloration near the knee. Serious complications are uncommon.
How long until GAE relieves knee pain?
Relief usually builds over the weeks after the procedure rather than immediately, and studies show it can be sustained out to 1-2 years.
Can GAE help severe or “bone-on-bone” knee arthritis?
GAE has been studied across mild to severe osteoarthritis, so advanced arthritis does not automatically rule you out. Imaging and a consultation will be the best way to determine your eligibility..
Is GAE the best treatment for knee arthritis?
There is no single best treatment for everyone. The right choice depends on your arthritis severity, what you have already tried, and your goals. For people set on avoiding or delaying surgery, GAE is a strong option to discuss.
Is GAE available near me in Lone Tree or Pueblo, Colorado?
Yes. ECCO Medical offers GAE at both our Lone Tree and Pueblo locations.
You Have More Than Two Options
You don’t have to choose between living with knee pain and undergoing a knee replacement. Genicular artery embolization gives many people a way to treat arthritis pain without surgery, and finding out if it fits starts with one conversation.
Take the Joint Pain Quiz or schedule a consultation with ECCO Medical in Lone Tree at (303) 529-2778 or Pueblo at (719) 212-2677. You can also book online.
