Actually, the worst thing that ever happened to me in regards to a game was when I was leaving the gym and walking down the front door steps of the school. I was talking with my partner and somehow missed a step. I came down kind of twisted and dislocated my kneecap. My left leg was in a cast up to almost my hip for six weeks. This was about 15 years ago. I still make sure I always hold the handrail going down steps, even in front of my house.
Got good meds for it, though.