I have a mild pain in my right knee exactly where the joint is. It only hurts when I jog, run, walk up/down steps or kneeldown, I can straighten it fine, although there is a lot of clicking (not just one big click, but rather 2-4 small clicks). There is also a very audible crunching/grinding sound, like wet sand or stone.

The knee is not swollen, its not sore to the touch, doesn't hurt when I put preasure on it, the pain is only felt during bending or straightening (when weight is on it).

I don't know what could have caused this, but I've had it now for 11 months and it's really starting to affect me. I thank you for any advice you can offer me.

I had the same pain last month. I went to a doctor and he said that I put a lot of pressure on my knee when I pray (I am a muslim). I have worn a knee protector for two weeks . The doctor also said that I should stop pressing my knee against the floor.Hope you get well :)