So, for past few months, I've been noticing very odd grinding sounds from my knees. I'm 16, so, it can't be an age thing. I'm a photographer, and during shoots, I'm doing a lot of kneeling down and what not. It's always when I'm coming back up. You think with all the getting down and back up constantly, that's whats doing it?
First thoughts are: 1. Chondromalacia Patella 2. Osgood Schlatters Disease Google and review the descriptions to see if either of these fit your symptoms.