I have had many injuries but this is the worst. just learnt how to trials hop when i thought ill do a big drop down these stairs. I got up there and thought this is the biggest one i have ever been on. You know how it is when you are doing something bigger that you, you fell very content until you get halfway in the air. So i got in the air and started to panic. At this time i was so scared i forgot about the most important thing my back brake i hit the floor. my wheel moved forward as i moved back . I fell back and cracked my head open on the concrete stairs and i have got a really big scar on the back of my head.