Chapter 31, Back, from Textbook of Family Medicine, 8th Edition, edited by Robert E. Rakel, MD and David P. Rakel, MD, remains your #1 choice for complete guidance on the principles of family medicine, primary care in the community, and all aspects of clinical practice. Ideal for both residents and practicing physicians, it includes evidence-based, practical information to optimize your patient care and prepare you for the ABFM exam. The full-color format features a clean, quick-reference layout that makes it easy for you to put information to work immediately in your practice.