Conversation: The conversation between human and AI assistant.
[|Human|] When I straighten my leg sometimes, my knee pops and it feels like my medial femoral condyle is moving forward on my tibia. I feel a sharp pinch in my knee and it hurts like crazy. I had a patellar realignment surgery on this knee about 20 years ago because I kept dislocating my kneecap.
[|AI|]  Hello, I have studied your case. I think you know quite a lot about knee anatomy. I think that you might be having either a torn meniscus or early knee arthritis. Furthermore, I would recommend you to get an MRI of the knee joint to confirm the diagnosis. If there is torn meniscus than you need to get arthroscopy meniscectomy. If it is early arthritis than it can be cured with the help of physiotherapy, hot water fomentation and voting gel local application. I hope this answer will be useful for you. Let me know if there is any other followup questions. Thanks