Skulls are thick and strong. Evolution etc.
The area that's actually removed in a "type 3" is a small patch in the middle of your brow, maybe an inch high by three or four inches wide. It's not a giant area, although this is the most delicate part post-op. It's also flush with the strong areas of your forehead immediately adjacent.
For you to damage this, you'd need to fall hard on something protruding which makes contact with that delicate area and that area alone. Like a table corner, that kind of thing. When running, there's no way that this part of your head would make contact with the ground first. Your nose and the upper part of your forehead would make contact and absorb the blow. I'd be more worried about destroying a nose job through falling than destroying a "type 3" forehead reconstruction.
So no, you're fine. No concerns at all. The area will heal strong, and it'll take a freak accident to damage it - the kind of freak accident that would have smashed that part of your forehead in anyway.
So don't fly United. The nation's favorite stubborn passenger / sex criminal / disgraced doctor / victim David Dao seems to have ended up with a crushed sinus from whatever the idiot cop smashed him in the face with the other day.
What, too soon???
