This handbook fully investigates reverse shoulder arthroplasty (RSA), presenting all the recent advances in the field to enable shoulder surgeons to treat patients with complex conditions, such as rotator cuff tears and instability, failed surgery and combined arthritis, or proximal humerus neoplasia.Reverse shoulder arthroplasty is becoming increasingly common because conventional total shoulder replacement may cause pain, loss of strength, simple or complex disabilities as well as limited motion, reducing general quality of life. The goal of a reverse prosthesis is to restore a painless, biomechanically valid joint. Drawing on the results of recent studies, the book covers all relevant aspects of RSA, including basic science, pathogenesis, clinical and instrumental evaluation, surgical techniques and complication management, helping readers to better understand when and how reverse shoulder arthroplasty should be implanted and what to do in cases of poor results. Written by leading shoulder specialists, the book provides surgeons and rehabilitation specialists, as well as residents and shoulder fellows, with a valuable, state-of-the-art guide for clinical practice.