MikeL wrote:Yes, strengthening the muscles around the knee is the way to go.
This. PFS is often caused by an imbalance in the quad muscles - usually specifically that a Tight ITB and stronger "outer" (lateral) muscles kneecap out of alignment so it tracks wrong. You need to teach the smaller muscles on the inside of your knee/ thigh to activate and help keep things in check. The exercises don't involve a lot of weight - an easy one is to roll a towel, put it under your knee and just lift your lower leg. add weight over time. Skaters are also a great exercise, once you're more pain free.
The pain is kind of normal - there's not a lot of space for inflammation in a knee. Ice, rest, elevation. If you can afford PT, ultrasound or infrared may help. Talk to your doc about an appropriate NSAID to help with the short term / acute inflammation.
I'm not a big fan of braces, myself, because they usually don't correct the underlying issue and can create a false sense of "correction". They are great to get over a hump, but too many people use them for too long and end up with other issues further down the road.