hello there I was hoping this title would get attention!! My question is concerning my knee problem. My knee seems to get agrivated and shift strangly when I cross my legs and I can't sit for long periods of time without pain in the knee. I also have really bad grinding in the area right of my kneecap above the hollow area , the knee also snaps almost every time I bend my knee. The grinding also occurs when I climb stairs.When I sit and extend my knee it grinds a lot (enough to gross people out if they touch my knee) and it continues to grind and pop even more when I return my leg in. I didn't have any real injury but have had problems throughout the years. I was wondering if anybody as any idea of what it could be and if there is any way to prevent this grinding.