This handy and practical book is intended to guide the reader through a correct pre-operative planning in common elective orthopedic procedures. To this aim, it covers arthroplasties and osteotomies of all primary anatomical districts: shoulder, elbow, hip, knee, and ankle. The core idea of the book is that drastic improvements in surgery's outcomes could be obtained following few correct rules. Moreover, correct pre-operative planning helps minimize errors and optimize the time spent in the operating room. Dedicated chapters also explain the importance of patient positioning. Both young practicing orthopedics and residents will find this book an excellent practical guide to the subject.