I've recently developed a sharp pain on the inside of my left knee, just below the patella. There's no event or trauma that I can link it to, but I feel it has to do with the amount of biking I've been doing since early spring. The odd thing is that it doesn't bother me at all while I'm biking--only when I try to do things like walk down stairs, or sit cross-legged. A biking friend suggested that it may have to do with the biking muscles becoming overdeveloped and throwing the physical mechanics out of whack. Perhaps if I work on strengthening the muscles I have been ignoring the knee pain will resolve.

Anyone experience something similar? I'd like to hear about it. Also if you have comments or insights I'd like to hear those too. Thank you.