system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
A previously healthy 61-year-old man comes to the physician because of bilateral knee pain for the past year. The pain is worse with movement and is relieved with rest. Physical examination shows crepitus, pain, and decreased range of motion with complete flexion and extension of both knees. There is no warmth, redness, or swelling. X-rays of both knees show irregular joint space narrowing, osteophytes, and subchondral cysts. Which of the following is the most appropriate pharmacotherapy?
assistant
Naproxen