Could anyone fathom a guess as to what sort of problem pain on the outside edge of your knee could be indicative of? I went hiking today, and I noticed that when we were going downhill, the outside edge of my right knee started to hurt. This has happened on other hikes where there is a long portion of fairly steep, rocky downhill. Once in awhile, my knee will ache from other activities, but not usually, ie. biking doesn't seem to hurt it, a year of taekwondo never seemed to bother it. The only other thing I've ever noticed is that I can't do lunges on that knee. I'm sure it's kind of messed up from years of dancing, but I never got it checked out during grad school (while I was on my parent's insurance still) and only got good health insurance very recently. I'm going to have it checked, but I was just curious if anyone else has experienced this, and what it could be a symptom of.