question: Hi. I fell out of our boat today. When I fell, I felt my right leg twist at the knee. For the next hour, my knee collapsed 4 times as I tried to walk even with family supporting me. Before this, I noticed my knee kept making a knocking/clicking sensation as I walked. There is no pain at all. I can t get xrays until the public holidays are over. Do you have any idea what it could be? Thanks Glenda