72 patients with knee osteoarthritis were randomized to intraarticular injection with either 40mg methylprednisolone or 30m ketorolac. Patients were assessed for improvement over 6-week follow-up in numeric rating scale (NRS) pain scores, the Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC), and the Oxford Knee Score (OKS). Results demonstrated significant significant within-group improvement in both groups for NRS pain score and WOMAC scores. However, for OKS scores, only the corticosteroid group demonstrated a significant improvement from baseline.