When I was a kid and teenager there were a couple of people who somehow managed to get broken or sprained bones over and over and over again. Some of them really seemed to like the attention associated with it and would make sure they got into school even when they could’ve taken loads of days off
People even do this into adult life! What are they doing that leads to so many injuries??
You can always make up a story, just stick with it!
My dad had a “hunting accident” story where a bullet went through his knee in the exact same place they would put screws when someone is in traction for a broken leg. The story got better every time he told it!