though this book is intended primarily for radiologists, it will also greatly benefit general rheumatologists, pediatric rheumatologists, pediatricians, orthopedic surgeons and all those involved in the diagnosis and treatment of children and adolescents with articular complaints. It employs simple and accessible language, so that it provides the in-depth information required by radiologists, while still being understandable for non- radiologists. Although its structure is fluent and logical, the chapters are all self-contained. Richly illustrated, its imagery combines the pictorial strength of old radiographs, which display late-stage abnormalities rarely seen today, and the appeal of modern imaging and its ability to detect early signs and subtle findings. Key points are summarized at the end of each chapter. By presenting essential information on imaging of the immature joint, the authors hope to provide a useful tool to help radiologists (musculoskeletal specialists and generalists alike) face the daily challenges of interpreting pediatric exams. Soon, artificial intelligence (AI) will be able to perform the most basic radiological diagnoses. Nevertheless, pediatric musculoskeletal radiology is complex and full of facets, and mastering this area in this ever- changing time can be a very important differential in the career of the 21st century radiologist.