Hypothesis: Ketorolac injection is a cost-effective adjunct in the nonoperative treatment of
knee osteoarthritis (OA) compared to steroids and viscosupplementation.
Aims/objectives: The objective of this randomized, controlled, double-blinded, prospective
study is to assess the efficacy and cost-effectiveness of knee injection with ketorolac in
the nonsurgical management of symptomatic OA compared to injections with corticosteroids and
viscosupplements.