Is there anything that can cause sudden, severe knee pain and swelling that isn't caused by some kind of tear in the knee?
My mom was at work today, and had to sit down due to knee pain. When she went to stand up, she could barely do it, and had to leave. After about 12 hours after the fact, it appears slightly swollen. She didn't think she tore anything, but I'm quite afraid of i because I question if she can handle it. She does have arthritis in the knee, but she also said it didn't feel like arthritis pain. Is there any kind of hope I can have that she didn't tear anything?