Originally Posted by StarFirebird
If I rotate on my heel,it's such a sudden pain I almost fall to the ground holding my knee.
I think I'll stick to rotating on the ball of my foot as I hardly feel any pain from it.
Sounds like you rotated trough something in your knee over the years ( like scratching off part of the bone on one side or smthng ), and that is hurting now. You are now shifting the point where you rotate, and will rotate trough the next thing in your kney in the next few years. I give you 10 years tops till you need a artificial knee to even walk.
Or you could like go see a doctor. Not that I care, but that's what people who want to get better do.