Perhaps exercise? But i could be wrong and static strecthes nah that wouldn't do anything at all. Do any skating or anything along those lines?
whoa, throwing around the old VMO argument. I think that is a little played. You most likely dislocated your patella because you have weak external rotators (piriformis, glut med ect). These weak external rotators cause your leg to buckle in when you land (some people call it a valgus stress). When that happens, your patella shifts laterally because that is the strongest line of pull in your quads. I would focus on external rotator strength and core strength.
Google any plyometric program, that will help with proper landing. One good exercise is to try to jump up onto a box, but land on one leg. The keys to this exercise are landing softly (try to make as little noise on impact as possible), and try to keep your knee straight when you land, landing like this allows your E.R.s to contract, which keeps your knee in the lowest stress position.
PM me if you want any extra tips, i dig this shit