i was finally given the exact name of the problem with my knee:

controlled malatia of the patella. (mind the spelling, i'm just taking a whack at it)

its a really funky name if i do say so myself. but unfortunately, nothing can be done. i'm kinda stuck with this. all i can do is consume glucosamine and hope that the cartilage in question strengthens.

ah well... guess there's nothing more i can do now is there?