good afternoon parent of...
Your son is tall and I wonder, has he grown a lot in the last few months?
Has the specialist mentioned his bone age? and what his expected total length will be when he is fully grown?
Children of his age often slouch/slump when they sit, does your son do this?
You say, he is a professional basketball player.... how often does he train in the week and how much of the true game time is actually playing? Does he
sit on the bench a lot?
I agree with the dokter that your son needs to be assisted in what he does with his body. He needs to learn how to know when is is overexerting himself.
Training a lot, bending forward playing ball, or slouching whilst sitting can aggrevate back problems.
BUT there is only one person that can truly answer all your questions and that is the fysiotherapist that will be seeing your son.
In general it is not wise to overtrain a childs body when the child is still growing.
I suggest being very aware of his training schedule and speaking to his trainer(s) about the backpain.
Ask you physiotherapist for advice, let him/her contact the trainer as well.
I too wish you all a wonderful Christmas time and a good, healthy and happy New Year.