So one of the reasons I started running was due to pain in my right knee and hip when I would run a lot. In the last year, especially the last six months, I have noticed that when I squat, my right knee makes a very disturbing "crunching" sound. Take an empty potato chip bag and crumble it...that is what my knee sounds like. It only seems to occur when I squat almost all the way down. Bending to a 90º angle does not usually make this sound. There isn't any pain, inflammation, or other symptoms. It does feel like something might be "rubbing" under my knee cap when I do this, but again, there is no pain and my knee is pretty solid. If I hold my leg out and push laterally on my knee, there is no give. It has not given me any issues when I run and actually feels better than it had in all the years I ran in "supported" shoes to correct for over-pronation. I plan to bring it up when I get a PCP and go for a physical, but I am a bit worried about doing that because then the doctor might want me to take a break from running for a while. Like I said, there is no pain at all, it isn't tender, it isn't swollen, nothing else seems to be wrong except for this very sickening sound it makes. Anyone else have anything similar or any ideas what could be causing it?