clinical knowledge, as well as technological advancements have extended new possibilities in surgical treatment and offered surgeons the opportunity to explore new ways of applying the AO principles. The new third edition of this book has been expanded to include new knowledge and explore state-of-the-art technology. It also addresses pressing challenges that face orthopedic surgeons today, such as the exponential rise in fragility fractures resulting from demographic changes and an aging population. The book aims to help surgeons to successfully rise to such challenges.