I still need an answer about a question

With my knee and the fact that it is turning in and I did have previous surgery. But that is not what I want to know I went to the hospital this last time when it first started to turn inward and they said something about GBS and they were talking in doctor talk. As it was a resident and the teacher doctor. Does anyone know what they might be talking about in why my knee problem is related to GBS. I don’t see a connection as I had surgery previously and it is just about the same thing now.

Thanks,
Sonja