How do I remove my knock-knee problem?

How do I remove my knock-knee problem? I have had a crooked knee since childhood and it is accompanied by pain.

Systematic exercise should help. Look for some videos on youtube about it. I'm sure there are a lot of people with this problem right now

You shouldn't do any physical exercises without visiting a doctor. You should first get a medical confirmation of your ailment, and only then proceed to its treatment. To make your problem clearer to you, I suggest you read the interesting information about bowlegs that I found for you. I hope you will find it really helpful!