Originally Posted by Davy

Okay. I don't understand this.
They had to remove part of his skull. Maybe part of the brain, too?

Anyway...

If you remove part of the skull like that, you need to cover it up with a plate or something. Otherwise he could easily poke his brain by just scratching his head.
So why did they not implant something that matched the shape of a normal head?
Would have been not problem...