Keanu Reeves busted his knee after tripping on a rug while on set for the new film Good Fortune, Aziz Ansari, the movie’s director, said Wednesday. During an appearance at CinemaCon in Las Vegas, Ansari cleared up speculation over photos of Reeves walking with crutches on the set in January. The injury was literally kept under wraps as the images showed the John Wick actor with a heavily bandaged leg. “About, I don’t know, 15 days into shooting with me, I was like, ‘Hey, just go chill in your dressing room for 15 minutes.’ And he tripped on a rug. He’s like, ‘Aah, my knee,’” Ansari said at CinemaCon, according to People. “Poor guy,” he continued, per The Hollywood Reporter. “He was such a trooper, and he fractured his kneecap and continued to do all the scenes.” Reeves “still filmed everything except some scenes where [Ansari] needed him to do salsa dancing, which we need to pick up,” Ansari said, per People, adding that the action movie star wanted to gut out the pain and …