GAE Procedure Targets Knee Pain Without Surgery — SkimNews
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- Genicular artery embolization (GAE) is a minimally invasive outpatient procedure that blocks tiny blood vessels associated with inflammation inside the knee to relieve osteoarthritis pain
- Leigh Casadaban, a vascular interventional radiologist at CU Anschutz, reports about 70% of patients have "phenomenal results," with pain scores cut in half or more and some reporting no pain at all
- The procedure typically takes one to two hours under conscious sedation, involves a small incision in the leg crease, and patients usually return home the same day after recovery monitoring
- Japan is where GAE was first developed about a decade ago; Japanese four-year follow-up data shows pain relief lasting that long for good responders, while U.S. data confirms two-year relief
- The FDA has granted "breakthrough device status" to multiple GAE-related devices since 2021 to accelerate review of technologies offering meaningful advantages for patients
- Nexsphere-F, a temporary device placed in knee arteries to block small blood vessels contributing to inflammation, is being evaluated in new clinical trials led by Casadaban at CU Anschutz
Why it matters: For the millions of osteoarthritis patients who have exhausted medications, physical therapy, and steroid injections but want to avoid major joint surgery, GAE offers a same-day option with a reported 70% response rate and pain relief lasting 2-4 years. With FDA breakthrough designations accelerating device review since 2021, the procedure fills a previously empty treatment slot between conservative care and total knee replacement.
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