Conversation: The conversation between human and AI assistant.
[|Human|] I got up from my recliner and my knee would not bend and was painful. I attempted to walk, but only with a stiff leg. It had swelling on top of my knee and behind my knee. I have not injured it, what could have happened. That was two days ago. thanks in advance for your assistance
[|AI|]  Hi, Thanks for your query. It seems that you had a muscle pull. Take proper rest. Hot fomentation and application of pain relieving gel will give you some relief in pain. You can take painkiller like Ibuprofen one tablet twice a day after meals with antacid Omeprazole 20 mg along with muscle relaxant like chloraxazone. This will relax the sprained muscles. If the pain persists, get yourself examined by your doctor do hope that you have found something helpful, and I will be glad to answer any further query. Take care