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 65 years old lady presented with a swollen and painful knee. On examination, she was found to have grade III osteoahritic changes. What is the best course of action?
assistant
The correct answer is  ref : maheswari 9th ed