Glad the healing's going well Snap!
DH has a plate in one thumb that dates back to the 1970s - I'm pretty sure it's steel not Ti because of how old it is. In all our travels it's set off a metal detector exactly once. He has a visible scar and it was easy to isolate the thumb with the wand, so they didn't give him too much trouble. Should be the same or better for you.
Now, a lumbar fusion or an artificial hip might be harder to isolate to TSA's satisfaction... 
Speed comes from what you put behind you. - Judi Ketteler