This case study presents a 60-year-old obese male patient with knee osteoarthritis, focusing on physical therapy interventions to improve functional outcomes. The patient experienced moderate knee pain, stiffness, and difficulty with daily activities. The treatment plan included strengthening exercises, endurance training, lifestyle modifications, and interferential current therapy over five weeks. Outcomes demonstrated increased muscle strength, reduced pain, and improved functional status, including the ability to ambulate and perform job responsibilities. The report details the patient's history, clinical examination findings (including range of motion, muscle strength, and pain assessment), and the interventions provided. The discussion emphasizes the effectiveness of physical therapy in managing knee osteoarthritis, highlighting the benefits of conservative treatments like exercise and lifestyle changes. The study underscores the importance of a comprehensive approach to address pain, improve mobility, and enhance the patient's quality of life. The patient's progress was tracked using various assessment tools, and the results showcase the positive impact of physical therapy in managing the condition and improving the patient's overall well-being.