This essay focuses on the post-surgical care plan for a 76-year-old male patient with a history of osteoarthritis who underwent total knee replacement surgery. The essay is divided into three sections: a nursing care plan using the Clinical Reasoning Cycle, a discussion of potential risks and the impact of comorbidities on the surgical process, and a discharge planning strategy. The essay analyzes the patient's condition, identifies nursing priorities, and proposes interventions to address the identified issues. It also explores the potential risks associated with the patient's comorbidities, such as hypertension, hypercholesterolemia, and chronic smoking, and their impact on general anesthesia and the surgical process. Finally, the essay outlines a comprehensive discharge planning strategy, including patient and family education, medication management, physiotherapy referrals, and home care services.