Creation of a Prospective Data Collecting Registry for Genicular Artery Embolization for Arthritis

Inclusion Criteria:

* Patients aged \>=18
* Bilateral or unilateral knee pain attributed to knee osteoarthritis (KOA). For bilateral KOA patients, the more severe knee will be permitted inclusion to the registry
* Grade 1-3 Osteoarthritis as diagnosed on standing weight-bearing knee radiographs per the Kellen-Lawrence Grading scale
* Knee pain \>6 months refractory to conservative medical management (Nonsteroidal anti-inflammatory drugs, acetaminophen, etc.)
* Not eligible for surgical knee replacement or patient's personal preference to undergo Genicular Artery Embolization (GAE) for reasons such as minimally invasiveness of GAE

Exclusion Criteria:

* Active malignancy
* Active infection of the affected knee
* Platelets \<50,000/uL, INR \>2.0 (unless on anticoagulation that can be reversed or performing radial/pedal access without reversal)
* Corticosteroid injection of the affected knee within 3 months of enrollment
* Rheumatoid arthritis or other seronegative arthropathy
* Previous surgery (excluding arthroscopy) of the affected knee
* Grade 4 per Kellgren-Lawrence Grading Scale of the affected knee
* Pregnancy or expected pregnancy
* Glomerular Filtration Rate (GFR) \<30
* Anaphylactic reaction to iodinated contrast
* Moderate to severe pain in other lower limb joints
* Body weight \>400 lbs. (prohibiting safe angiography)
* Peripheral arterial disease of the treated extremity (Rutherford Grade 2 or greater)