The best you can do with patella problems is work around them. You have to work on flexibility and muscle of the entire leg. The flexibility will loosen things up so there's not so much pull on your knee through every move, and the more muscle you have throughout your leg, the less pressure on your patella.
Both of my knees have patella tendinitis; a different condition but from what I understand the treatment is the same. The most annoying part about it is that it just doesn't heal. The pain can be managed with the above PT, but if you stop, it comes right back.
As always, you should probably contact a doctor before doing anything, but you can look up leg flexibility exercises and lower body, body weight exercises for strength. Start slow and build consistently.