Walk In Doctors

my brother is 4 years. Last night he got his leg trapped in a chair at a baseball game. This morning he woke up and could not walk. Whenever I ask him where it hurts, it shows his left knee. when he tries to walk, he straightens his left knee and is putting pressure on her and when the pressure is on he has to sit down. the thing is that it can explore this topic. he is not joking, because this has never happened before. my parents are going to take to doctors. What do you think ????? is incorrect

He probably had a sprained knee, especially if they had to manipulate to get out of the chair. It's just there probbaly swollen and hurts really bad.

It will be OK. I'm glad they took him to the doctor. Do not worry. You're a good brother / sister to worry about him like that.