A key component within the Master Techniques in Orthopaedic Surgery (MTOS), MTOS: The Hip, through its previous three editions has provided both physicians in training and experienced surgeons a wealth of expertise in orthopaedic hip surgery techniques. As with other texts in the series, the written format of the text as 'here's how I do it' along with extensive use of color photographs and drawings have guide the reader through both common and challenging procedures step-by-step. Building on the format of the previous editions Dan Berry, MD, and William Maloney, MD, will again serve as editors for the fourth edition.