Ds's Knee

Ds injured himself at school while playing with some friends. He tripped over another kid's foot and slammed his knee into a concrete curb. He called me from school to tell me about it, but did not mention that his knee was swollen to nearly twice it's normal size. I was shocked when he came home and I saw how big it was. We went to the nearest urgent care center as it was after hours and x-rays showed that nothing was broken or fractured. Even now, one week later, he still has some swelling and pain.