The goal of this clinical trial is to investigate the effectiveness and safety of intra-articular corticosteroid injection (IACI) in alleviating post-procedural pain and improving early outcomes in patients undergoing geniculate artery embolization (GAE) for knee osteoarthritis (OA). The main questions it aims to answer are: * Does intra-articular corticosteroid injection reduce pain levels post-procedure compared to GAE alone? * Does the combination of GAE and IACI improve functional outcomes and patient-reported outcomes compared to GAE alone? Investigators will compare patients receiving GAE with IACI to those receiving GAE alone to see if the addition of IACI provides superior pain relief and functional improvement. Participants will: * Undergo geniculate artery embolization, with or without intra-articular corticosteroid injection. * Have their pain levels assessed using the Visual Analog Scale (VAS) at 1 week, 2 weeks, and 4 weeks post-procedure. * Complete functional outcome assessments using the KOOS and WOMAC scores. * Report any adverse events throughout the study period.