The aim of the paper is to describe the nursing care experience in an osteoarthritis patient who received total knee replacement. The author used Gorden 11 functional health status assessmeut critenia to evaluate this patient. After evaluation, the patient had anxiety problem from lack of knowledge of the disease and the prognosis of the activity. After the operation, the math health problems were pail and mobility. In this nursing process, the researcher improved the clients physical symptoms by providing appropriate information and emotional support. Futhermore, the investigator helped the client use the mobility-skills. Then the client walked back home with a walker.