Knee replacement surgery can relieve arthritis pain for millions of patients — but for some, inflammation, swelling, and pain continue long after recovery. If that sounds familiar, there may be a biological explanation, and a solution.

When cartilage breaks down due to osteoarthritis, your body responds by growing new, abnormal blood vessels around the joint — a process called angiogenesis. These fragile vessels become a direct pathway for chronic inflammation and pain. What many patients and even physicians don't realize is that this abnormal vessel growth can persist even after a joint replacement. The implant addresses the damaged cartilage, but the underlying vascular changes are often still active — continuing to fuel the swelling, stiffness, and discomfort you're still experiencing.

GAE is a non-surgical procedure designed to treat exactly this. During GAE, your physician uses X-ray imaging to guide a thin catheter into these abnormal blood vessels and releases small temporary embolic particles that gently block them. The particles are temporary — they dissolve naturally in about 30 minutes — making the procedure exceptionally safe, with virtually no risk of affecting healthy surrounding tissue. The particles are made from an antibiotic powder mixed with contrast to form crystals.

In the weeks that follow, inflammation quiets, joint function improves, and patients report meaningful, lasting reductions in pain — even after years of post-replacement discomfort.

If your knee replacement didn't deliver the relief you expected, persistent angiogenesis may be why. GAE offers a targeted, minimally invasive path forward.