On August 30, 2009, Arizona’s closer Chad Qualls had a serious injury on the game’s final pitch. Qualls managed to dislocate his left knee cap, while deflecting the soft liner with his glove to the short stop. While he was doing that, he twisted his body awkwardly. Arizona’s manager, A.J. Hinch said that you could see the dislocation. “The trainer put the knee cap back in place, but now we’ll just have to wait and see how much damage there was.” Knee cap dislocations don’t just happen in baseball. They are seen all over the sports world, like basketball, field hockey, ice hockey, etc. It’s very scary when it happens, you go into a sudden shock and it is a lot of pain, but if you know what to do when it happens, it will be a lot easier to deal with. Knowing how it happens, what the symptoms are, how to treat it when it happens, the surgery and physical therapy afterwards, and how to protect it and prevent it from happening again, will make it easier to deal with.…