Lidocaine/Chlorhexidine Acetate/benzalkonium bromide

Knee osteoarthritis (KOA) is one of the most common and disabling conditions among Veterans. Management of KOA is challenging as there are few effective treatments other than joint replacement. Importantly, low levels of physical activity in patients with knee problems might worsen pain and disability. This study aims to determine the feasibility of using methods to change behavior that use social incentives and promote physical activity through playing games and interacting with a web-based platform. The study will also evaluate an important and widely used treatment, namely corticosteroid injections. Participants will be randomized into one of 4 arms and will receive a different combination of social incentives and injections. The study will evaluate which approach is most effective at promoting physical activity and reducing pain and disability.