Purpose: The purpose of this study was to analyze the effects of a case management program on range of motion, pain, depression and self efficacy in community-dwelling older women with knee arthritis. Methods: The research design was one-group pre and post-test design with 40 participants with knee arthritis who agreed to participate in the 12-week case management program. Data were collected four times, before and after 4, 8 and 12 weeks. Results: Repeated measures ANOVA revealed significant differences between before and after the service in range of motion, pain, depression and self efficacy. Significant improvements from the baseline to 4 weeks after the service were observed in the measurements of range of motion, pain, depression and self efficacy. There were no significant differences in range of motion, pain and depression between 4 and 12 weeks after the services. Conclusion: This study represents the first effort showing that a case management program can have positive outcomes on range of motion, pain, depression and self efficacy for older women with knee arthritis. More research using a control group pre-post test design considering time lapse is needed in order to examine more accurately the effects of case management programs for knee arthritis.