My son has pars deficit of the 4th lumbar. he is 16 and plays football. He wore a brace from 8/1 until now. he is practicing football again. he did not injure himself during a game but during practice. How dangerous is it for him to play again. My son says he is in no pain during excercises. The Dr said they still see edma around the area, and can see healing. Should he play football? YYYY@YYYY