Common since question?? 10 points!!?

Yesterday I had arthroscopic knee surgery and I had a dislocated kneecap almost. I had a flap of ligament that pushed by kneecap way out of track. So he cut that ligament and my kneecap is now back in place. I go back June 1st for a follow up appointment. MY QUESTION, HOW LONG UNTIL I CAN DO SPORTS? I have to start therapy soon.