When i was six, i fell while bmx, got an open bone fracture (bone was sticking out) in the hospital they used local anaesthetics then pushed the bone back in place, closed up right in front of my eyes, i found it awesome, very weird thing was, it didnt hurt as long as i dint move it whilst 3years later i broke my wrist again and had much more pain, and it was just a hair fracture...
-my 2cent...