The Hip Joint, written in 2016, provides a detailed account of the hip joint's anatomy and biomechanics and covers recent trends in orthopaedic surgery of the hip joint, including the latest advances in revision total hip arthroplasty (THA), computer-assisted navigation for THA, resurfacing of the hip joint, neoplastic conditions around the hip, and indications, complications, and outcomes of hip arthroscopy. Another book, The Hip Joint in Adults: Advances and Developments, gives additional important details of how hip joint surgery has evolved around the world. While much of the basic knowledge in this area is constant, it is critically important to stay current on those areas that do change. This present updated book, The Hip Joint, 2nd Edition, contains a host of original articles from contributory authors all around the world, showing the evolution of the hip joint till the present day, building upon the solid foundation set by the first edition. It covers hot topics such as 3D printing in orthopaedics and traumatology, stem cell therapy in orthopaedics, hip resurfacing, hip-preserving surgery, sports medicine for the hip joint, robotic-assisted surgery in orthopaedics and neoplastic conditions around the hip.