Hi, my 6 yr old daughter was playing on the playground at school yesterday. She was walking on a "balance bar" which is on the ground and she tried to do a cartwheel of the bar. She fell on her left arm hard. She was sent to the nurse where they gave her ice for some mild swelling. The playground has a "soft" pad under it and above the concrete but it is not extremely soft. My daughter is complaining of pain constantly and while she is able to use her arm and hand, she is certainly favoring it. Her pain is in her arm between the wrist and elbow, closer to the elbow, and on the bottom side of her arm. There is not much swelling, more of a lump or bump, over the site and no bruising. It is painful to the touch. I am concerned she could have a hairline fracture, but am not sure if her symptoms would fit that.