Hi!
Try also Clinical Sports Medicine by Brukner and Khan. Good for Sports Injuries. Seems to be a bit of a "bible" amongst the sports physcians i know.
My other piece of advice is...don't become a electrotherapy physio or an exercise only physio. Our skill is in our hands. Develop your skills in your hands because anyone can prescribe general exercises - your job is to sort out which ones are appropriate and when!
All the best!