Knee injuries are common occurrences that affect the young active population and can lead to subsequent long term joint degeneration. This book provides an overview of current research examining knee injury mechanisms, prevention, and treatment options. Detailed discussions are included related to current treatment options for ACL injury, PCL injury, meniscal tears, patellofemoral instability, and combined knee pathology. Additionally, current advances in tissue engineering in ACL reconstruction and results following transphyseal ACL reconstruction in adolescents are examined. Furthermore, biomechanical studies and computerised modelling techniques are highlighted as methods for determining the mechanisms and sequelae of knee injuries, thus aiding in the development of injury prevention programs.