This book introduces the current state of surgical treatment in this particular location-sacrum and pelvis, presenting progress and innovation, describing in detail the related procedures. The book comprises three main parts, pelvic, sacral and typical cases. In each part, chapters are organized in a parallel fashion, with general considerations, surgical approaches and commonly used procedures. This helps to illustrate and detail the surgical techniques involved. This book is valuable for surgeons dealing with this challenging disease. Additionally, it summarizes and reinforces the previous knowledge of techniques in this field.