A week ago, C fell off a scooter. I saw the fall, but he shook it off pretty well. I had him wear a wrist brace for a week, and it seemed to be better. That night, he tripped and fell on his wrist and started complaining about it hurting again. It seemed to be swollen on top of his arm where before it was only on the bottom side. The dr took one look at it and said it was broken. The swelling was actually from a buckle fracture, where the bone "crinkles." The cast is simply to prevent him from injuring his arm again while it heals up. He has been a great sport about it. I think he likes the attention!