Having danced, figure skated and played sports since I was very little, I've been injured many times...... (too many for me to sit here and count, actually) Most recently, I blew my knee out during a car accident Thanksgiving Weekend.
The most important thing you can do is listen to everything your doctor tells you to do, down to the very last detail. I can't stress that enough. I'll admit that I'm overwhelmingly stubborn and I don't, but years after suffering some of these injuries -- and only a few short months after my most recent -- I can tell you I'm feeling the pain of not listening.
Your DR will probably want you to do physical therapy.... do it. And for as long as he says you need to. Yeah, most of the stuff they're going to have you do seems stupid and corny, but in the long run it will actually help strengthen your knee (or whatever the injured area) and prevent further injury.
Most importantly, stay off it. I know it's somewhat impossible and you hate feeling like an invalid (I know that's how I felt), but you haaaave to do it. It sounds like a very small and inconsequential detail right now but trust me, it pays off.
Feel better! Getting injured SUCKS! (especially right before a show -- been there, done that too.... only I got completely replaced in that company!)
"You're every gay man's wet dream!" ~ MA
If in Heaven you don't excel, you can always party down in hell...