I agree with knowing the orthopaedic physical exam. I thought Hoppenfeld was very good for this. He also has a book which is terrific if your on the spine service entitled "Orthopaedic Neurology" which details examination of the spine.
Above all other priorities, know your anatomy: this will be expected; it will not be expected for you to know how to do an ulnar nerve transposition, but it would be a good idea to know where the ulnar nerve is and what it does.
I'm not sure how high yield Miller is. Miller is a review text and therefore assumes that you already know stuff (I did not and really question if I do now). Moreover, I don't think I was ever piumped about basic science during any of my rotations. However, if you really want to know basic science, let me advocate for the Baratz book: I'm reading it right now and will finish it during my intern year. It's a little expensive, but I think it's a good investment.
Good luck on your rotations: show up to play and then play to win.