Lyle J. Micheli, M.D., is director of the Division of Sports Medicine at Children’s Hospital Boston. The clinical Professor of Orthopedic Surgery at Harvard Medical School in Boston, and in 2005 was named the O’ Donnell Family Professor of Orthopedic Sports Medicine at Children’s Hospital Boston. He is a past president of the American College of Sports Medicine (president 1989-1990), having also served on the Board of this organization and as Vice-President of Medicine. In November of 2005, Dr. Micheli, was invited by the International Olympic Committee’s Medical Commission to IOC Headquaters in Lausanne, Switzerland to co-chair and assist in the writing of an IOC Consensus Statement on the Training of the Elite Child Athlete. He is the author of over 300 scientific articles and reviews related to sports injuries, particularly in children. His present research activities are focused on the prevention of sports injuries in children, including assessment of risk factors and injury occurrence. Dr. Micheli has edited and authored several major books, including The Sports Medicine Bible (HarperCollins, 1995)