In the book "MRI of the hip", we endeavoured to cover almost all pathologic entities, with an emphasis on those related to sports injuries. Without the invaluable contribution of colleagues who authored the chapters on topics of their expertise this project would not be possible. In all chapters, clinical aspects, schematic drawings and a wealth of images are aiming at helping the reader to understand the content. Individual chapters address specific topics. Therefore, it is not necessary to start reading with page one.