The pediatric athlete with open physeal plates is more sus - ceptible to growth plate injuries and avulsion fractures than to ligament and muscle-tendon injuries that most often occur in adults. Muscle contusions and strains are common injuries in young athletes. Although they are rare in the early and middle stages of childhood, they become quite common during the growth spurt period. Healing of muscle tissues is much more rapid in children than that in adults, but it must be ensured that full motion and full strength are regained before returning to sports activities, because re c u r rences of injuries may result in more serious compli - cations such as myositis ossificans. On the other hand, acute tendinous injuries are quite rare in children; however, repetitive submaximal stress may lead to overuse syn - d romes. This article reviews the basic anatomy and function of skeletal muscle and discusses the physiopathology of muscle-tendon injuries, and the methods of treatment and p revention, with particular focus on the growing child.