What is Genicular Artery Embolization (GAE)?
Genicular artery embolization, or GAE, is a minimally invasive image-guided procedure that targets small blood vessels associated with inflammation around the knee.
How GAE Works
Using imaging guidance, a physician identifies and treats small genicular arteries that may be contributing to ongoing inflammation in the knee. A thin catheter is inserted through a tiny puncture in the skin — no incisions, no reopening the knee, no replacing hardware.
Tiny microspheres (sand-like particles) are delivered through the catheter to reduce blood flow in the abnormal vessels feeding the inflamed tissue. This reduces the inflammatory activity that is driving pain and swelling.
The procedure is performed under local anesthesia and sedation in an outpatient setting. Most patients go home the same day.
Key facts:
- No surgical incisions
- No general anesthesia
- No hardware changes
- Outpatient, same-day discharge
- Does not interfere with existing knee implants
Why GAE May Matter For Selected Patients After Knee Surgery
GAE was originally studied and validated for knee osteoarthritis. Early studies now suggest it may also help selected patients with persistent pain after total knee arthroplasty — specifically when the primary driver of pain is ongoing inflammation or synovitis rather than a mechanical or infectious problem.
The reasoning is straightforward: surgery addresses the structural joint problem, but inflammatory tissue and abnormal neovascularization can persist after the implant is in place. GAE may interrupt that inflammatory cycle without requiring another major operation.
This is an emerging area. Not every patient with post-surgical knee pain is a candidate, and careful evaluation is essential before proceeding.
What GAE is Not
- It is not a substitute for orthopedic follow-up
- It is not the right treatment for every cause of persistent post-surgical pain
- It is not intended to treat infection, hardware failure, loosening, or major instability
- It is not a guaranteed cure — results vary based on patient selection and the cause of pain
Am I a Candidate?
You may fit this pathway if:
- You had knee replacement or other knee surgery months ago and still have pain, swelling, or stiffness
- Your symptoms interfere with walking, stairs, exercise, sleep, or daily life
- You have already tried time, rehabilitation, medications, or routine follow-up without enough improvement
- You want to understand whether a minimally invasive option is relevant to your situation
You may need to return to your surgeon first if:
- You have fever, chills, drainage, or increasing redness around the incision
- You have severe instability, new inability to bear weight, or a sudden major worsening of pain
- You have been told there may be loosening, malalignment, hardware failure, or infection
- Your symptoms are urgent, rapidly changing, or clearly mechanical
Candidacy starts with evaluation, not assumptions. A focused review considers:
- The type of surgery you had and how long ago
- Whether symptoms are improving, stable, or worsening
- What treatments you have already tried
- Whether there is evidence of infection, instability, or structural problems
The Right Patients Matter
The value of this pathway depends entirely on proper selection. The goal is to identify which patients may benefit from a minimally invasive approach and which patients need a different kind of workup or treatment first. An evaluation with a specialist — not an online assessment alone — is what determines whether GAE is appropriate for you.