Key principles -- Particular paediatric points -- Paediatric skull-suspected NAI -- Adult skull -- Face -- Shoulder -- Paediatric elbow -- Adult elbow -- Wrist & distal forearm -- Hand & fingers -- Cervical spine -- Thoracic & lumbar spine -- Pelvis -- Hip & proximal femur -- Knee -- Ankle & hindfoot -- Midfoot & forefoot -- Chest -- Abdominal pain & abdominal trauma -- Penetrating foreign bodies -- Swallowed foreign bodies -- Test yourself -- Test Yourself-answers.