Derek Therrien, 15, is a skilled trampolinist who's into a sport called GTramp. He was practicing in his backyard when a trick went terribly wrong. Derek broke two ribs and popped a blood vessel during the mishap.
GTramp is becoming increasingly popular with young boys who are attempting difficult tricks on backyard trampolines. Friends share videos online, trying to outperform each other.
In the past, Derek performed tricks without incident, and he said this is the worst injury he’s ever had.