Living with arthritis in your knee can feel like you’re carrying a weight everywhere you go. The ache is there when you wake up, the stiffness shows up after sitting, and walking or stairs can turn into a daily negotiation. Many people try the usual options first—physical therapy, anti-inflammatory medications, or injections. Those can help, but not always enough, and not always for long. Genicular Artery Embolization, or GAE, is an outpatient, minimally invasive procedure that offers another path for people whose arthritic knee pain is still limiting their life.
Osteoarthritis happens when the cartilage that cushions the knee wears down over time. But pain isn’t only about “bones rubbing.” In many people, the lining of the knee joint stays chronically inflamed. When that lining is irritated, the body sends extra blood through small vessels around the knee called the genicular arteries. That extra blood flow brings more inflammatory chemicals into the joint, which keeps swelling and pain signals active. Over time, the knee can get stuck in a cycle where inflammation feeds pain, and pain feeds more inflammation.
GAE is performed by an interventional radiologist, a doctor who treats problems inside the body using tiny tools and imaging instead of open surgery. The goal of GAE is to calm arthritic knee pain by reducing the abnormal blood flow that fuels inflammation. Because it doesn’t involve cutting into the joint or replacing bone, it’s typically done the same day in an outpatient setting with local numbing medicine, not general anesthesia.
During GAE, the radiologist guides a very thin catheter through an artery, usually starting at the wrist or groin, and navigates to the area around the knee using live imaging. A small amount of contrast dye shows exactly which genicular branches are overactive. Then tiny, biocompatible particles are released into those specific micro-vessels. These particles block the abnormal vessels feeding the inflamed joint lining, lowering blood flow to the irritated tissue. With less blood supply, inflammation settles down, and the nerves in the knee aren’t constantly triggered. For many patients, that means less pain, less swelling, and easier movement.
Most patients are awake but relaxed. The numbing medicine prevents pain where the catheter goes in, and people usually feel only mild pressure during the procedure. The treatment often takes about one to two hours, followed by a short period of monitoring before going home the same day.
GAE is most often used for people with mild to moderate knee osteoarthritis who have had pain for months and haven’t gotten enough relief from conservative care like therapy, medications, or steroid or gel injections. It can also be appealing if you want to delay knee replacement, or if you’re not a strong surgical candidate right now. GAE is not meant to rebuild cartilage, but to reduce the inflammation that makes arthritis hurt.
The biggest benefits people notice are the ones that matter day to day: walking farther, standing longer, and doing stairs with less fear. Many patients feel improvement within a few weeks, and studies show pain and function gains can last many months and sometimes longer, depending on arthritis severity and overall joint health. Results vary, and some people may need additional arthritis care over time, but the overall evidence supports GAE as a meaningful bridge between injections and surgery for the right patients.
Because GAE is minimally invasive, complications are usually mild. The most common issues are temporary bruising or soreness at the catheter site and short-term knee discomfort as inflammation calms down. Serious problems are uncommon when the procedure is done by experienced teams. Most people return to normal daily activities within a day or two, avoiding heavy exertion for about a week.
If arthritic knee pain is still controlling your life after you’ve tried the standard options, Genicular Artery Embolization may be worth discussing. It offers a non-surgical way to reduce inflammation at its source, with a short recovery and no joint replacement. A consultation with an interventional radiologist can confirm whether your knee and your pain pattern make you a good fit for GAE. Request an appointment today!
GAE reduces arthritic knee pain by blocking tiny overactive vessels that feed inflamed tissue in osteoarthritis. With less abnormal blood flow, inflammation eases and pain signals quiet down.
Some patients notice improvement within days, but most feel steady progress over several weeks as inflammation settles. Relief typically continues to build during the first one to two months.
No. GAE doesn’t reverse osteoarthritis or rebuild cartilage. It helps manage symptoms by reducing inflammation, which can lead to long-lasting pain relief for many people.
Yes. GAE doesn’t change the knee’s structure, so it doesn’t prevent a future knee replacement if you need one later.
The best candidates usually have chronic knee pain from mild to moderate osteoarthritis and haven’t gotten lasting relief from therapy, medications, or injections. Imaging and a specialist evaluation confirm fit.
