Dr. Patrick J. McMahon is an Assistant Professor of Orthopaedic Surgery at the University of Pittsburgh Medical Center's Division of Sports Medicine & Shoulder Surgery. He is also Physician Consultant/Attending Physician at the V.A. Medical Center, Pittsburgh and Assistant Team Physician (Football) for Intercollegiate Athletics Sports Medicine at the University of Pittsburgh. McGraw-Hill authors represent the leading experts in their fields and are dedicated to improving the lives, careers, and interests of readers worldwide