This book uniquely addresses anterior cruciate ligament (ACL) injury - one of the leading issues in orthopedic sports medicine - throughout the lifespan, with a focus on differences depending on age and activity levels. It provides readers with fundamental knowledge, such as anatomy histology and biomechanics, as well as with diagnostic criteria specific for each age group and activity level - from pediatrics through adolescents to adults and high-level athletes. Furthermore, international experts present diverse prevention and injury management criteria as well as state-of-the-art surgical techniques based on the expectations of each age and lifestyle group. Designed to be an easy-to-read reference guide, this book presents fundamental concepts in the management of ACL injuries. It appeals to a broad readership ranging from orthopedic surgeons, residents and sports physicians to athletic trainers and all professionals involved in rehabilitation following ACL injuries.