My Son Is 13yrs Old He Had Abrace Fitted In

My son is 13yrs old he had abrace fitted in august this year since then it has broke 5 times the last time was 5 weeks ago when he had 2 hav it completly renewed he was told that if it happened again he would no longer treat him and it has completly broke again 2 day i dont think he is perpesly breaking it but he cant seem 2 help it what do you sugest thank you