This book is a practice-oriented manual teaching the successful examination technique developed and taught by the author known as "Graf's technique". The book is based on the author's experience of more than 20 years. It is easy to read and provides a real "hands-on" manual giving numerous practical tips. The book includes the fundamentals of hip sonography, static as well as dynamic techniques, anatomical identification of the echograms, typing, a measurement technique and usability check. The book also contains an atlas including a summary of the essential data and demonstrating correct and incorrect sonograms in different variations.