Abstract
In this case, psychological factors such as pain catastrophizing and anxiety were recognized for pain after high tibial osteotomy. These factors increased disability, and hindered lifestyle, self-efficacy, and coping skills. Occupational therapy introduced coping strategies to reduce pain and anxiety. The combined occupational therapy practice program resulted in improving performance measures and reducing disability. Combining occupational therapy with coping skills reduces psychological factors (catastrophizing and anxiety), postoperative pain, and disability leading to improvement of goal achievement.