A book about "therapeutic exercise" could be useful (hopefully this link will work):
Amazon.com: Physical Therapy - Allied Health Professions / Medicine / therapeutic exercise / Amazon.com: Books
The book by Kisner and Colby (the first one on the list) would be a good choice; it is a classic reference for physical therapists. Here you can find more information about this book, including a sample chapter and a video collection:
Therapeutic Exercise: Foundations and Techniques