This book comprehensively discusses both the history and the current concepts of modern hip preservation surgery. Offering an overview of the game-changing studies on the hip and pelvis vascular anatomy it thoroughly describes the evolution of a new and comprehensive pathophysiology of the hip joint degeneration. Moreover, in the first part, particular emphasis is devoted to the history and current knowledge of femoroacetabular impingement and hip dysplasia. The second part examines the main surgical procedures that have evolved and matured since the 1980s, culminating in a new class of open surgical approaches, such as hip surgical dislocation, periacetabular osteotomies, proximal femoral osteotomies and corrections, and widening the door for hip-arthroscopy. Based on over 40 years of practical and pioneering experience by the editor and 15 years of collaboration with the GICCA Study Group, this book offers a valuable resource to residents,researchers and practicing orthopedic surgeon wishing to gain insights into hip preservation surgery.