Treat Me, but No Tricks Please

My doctor at the Hospital for Special Surgery in New York, Joseph Feinberg, seems to share my opinion. “Very often, I think the hot packs, cold packs, ultrasound and electrostimulation are unnecessary,” he said, adding, “For sure, in many cases these modalities are a waste of time.”
So has physical therapy been tested for garden-variety sports injuries like tendinosis? Or is it just accepted without much question by people who urgently want to get better?