I just have a question. For about a year now I have been having some weird trouble with my left knee. At the randomest times my knee gives out on me and I am in the worst pain you can think off it hurts a lot when it happens. Sometimes I'm just like walking and it will give out, it feels like everything in my knee cap separates for a second, I know that sounds stupid but thats what it feels like and the other day the same thing happened but to my right knee, I'm kind of worried. Any idea's on what it could be?