You know your trampoline accident is bad when all the kids start screaming and sprint out of gymnastics class like the jamboree is on fire.  Also when you look down and your shin bone is sticking out the bottom of your foot.  That’s a bad sign too.  Reminds me of when I snapped my cousin’s arm like a twig playing popcorn on my trampoline back in the day.  Compound fracture like you read about.