74 patients with hip or knee osteoarthritis on a waitlist to undergo arthroplasty were randomized to receive either six physiotherapist-led group-based sessions consisting of education, exercise, and relaxation, or to control intervention of usual care. The purpose of this study was to determine if physiotherapy sessions administered to patients on arthroplasty waiting lists would be effective in managing pain outcomes. Secondary outcomes included disability and function outcomes, as well as self-efficacy and health-related quality of life. Findings indicated significantly lower Brief Pain Inventory scores of severity and interference scores in the therapy group compared to the control group. Significant short-term efficacy was also observed in the therapy group for health-related quality of life scores and self-efficacy; however, long-term effectiveness was comparable to the control group. Disability and function outcomes were also comparable between groups.