@knj27 I asked the same type of questions in that interview!
I specifically targeted something about each interviewer that I had remembered reading in their Bio and asked a question about that. I also read up on the faculty before I even went to the interview (I just did that the night before). Also, I think researching the program it self is helpful. If there are any new articles, achievements, or studies that are specific to that program.
The way I worded the question I asked was I stated that I had not had a chance to observe wound care but it was something I was very interested in seeing. The PT I shadowed in in-patient had told me it was a very intense procedure and I wondered what had caused him to choose burn rehabilitation and wound care. He then told me his story, which was very interesting, and I could tell he enjoyed telling it. You aren't asking a generalized question about PT, you are asking a personalized question about that specific PT. This shows that you are observant and interested in your interviewers and the career itself.