Part I: Epidemiology and clinical examination.- Imaging techniques.- Normal anatomy and variants that simulate injury.- Physeal injuries in sports.- Pseudotumors and incidental findings in sports injuries.- Current role of Ultrasonography .- Part II: Shoulder.- Elbow.- Wrist and Hand.- Pelvis and groin.- Hip.- Knee-intra articular injuries.- Knee-extra articular injuries.- Ankle and foot.- Spine.- Part III: Common injuries in football.- Common injuries in mountain skiing.- Common injuries in water sports.- Common injuries in tennis.- Common injuries in gymnastics.- Subject index.