Re: Knee going off track?
Well, my knees have similar tracking problems, which caused very painful dislocations while I was doing mundane things (swimming, walking, jumping on one leg) and I was on crutches for two of them, so it might be a bit different for you. But, I had to have extensor-mechanism realignment surgery because the dislocating was just too much of a problem, as was tracking. There were other surgical options, but I'm an athlete and that was the most concrete one for me.
Before I developed the dislocating problem, though, I went to PT for the tracking problems, and it really does help if you strenghthen quads and the inside of your knees. It makes the tracking problems less painful. Hope that helps a bit...