[rr14]

Hi all, this is my first post here and nice to meet you all.
I have a son who is 1.5 years old and he did his 1st shunt surgery when he was 3 months old because of an arachnoid cyst.
Up until now everything is alright but today he felt down on his back when he was sitting down on the floor and my question is that is it dangerous that when he hit his back part of his head, will it affect the shunt or may it broke the shunt?
Thank you very much