GAE Offers Minimally Invasive Alternative to Knee Replacement — SkimNews
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- Genicular artery embolization (GAE) blocks blood vessels supplying inflamed areas of the knee through a small catheter incision, providing pain relief without replacing the joint or requiring general anesthesia.
- Leigh Casadaban of the University of Colorado Anschutz reports approximately 70% of patients see "phenomenal results," with pain scores cut in half or more and some patients reporting no pain at all after the one-to-two-hour outpatient procedure.
- GAE was first developed in Japan more than a decade ago, with Japanese four-year data and U.S. two-year data showing durable pain relief for good responders, according to Casadaban.
- The FDA has granted "breakthrough device status" to multiple GAE-related devices since 2021, a designation meant to speed development and review of medical technologies offering meaningful patient advantages.
- Casadaban's team at CU Anschutz is running clinical trials on GAE's effects on knee joint fluid and is evaluating a new temporary blocking device called Nexsphere-F.
- Patient Cynthia Schraf-Fletcher, 74, said her GAE outcome felt nearly identical to the total knee replacement she previously had on her other knee, allowing her to garden and ride a stationary bike with minimal pain nearly a year later.
- Researchers are beginning to explore similar embolization approaches for frozen shoulder, tennis elbow, and plantar fasciitis, potentially extending the technique beyond knee osteoarthritis.
Why it matters: Osteoarthritis affects millions of people who today face a binary choice: live with chronic pain or commit to total knee replacement surgery. A one-hour outpatient procedure with a 70% substantial-response rate and documented two-to-four-year relief could meaningfully delay or eliminate major surgery for many patients caught between failed conservative treatments and the operating table.
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