lots of the usual stuff...
why ortho?
what kind of practice do you see yourself in?
what strengths would you bring to this program?
why are you interested in our program?
what is the most important thing to you?
Tell me about yourself./ about your family.
What do your parents do?
Where did you grow up?
What would you do if you couldn't do ortho?
What are your research interests?
Why did you choose XX college? med school?
...to the more creative questions...
What are you most afraid of?
What do you want on your gravestone?
Why did you make a "B" in xxxx rotation?
What do you see in this X ray? How would you treat it?
What would you do with a EKG like this one?
...and, my all-time favorite:
Why aren't you married?