This book covers the sound fundamentals and philosophy of the upcoming super-specialty of "hip Preservation". This manual provides step-by-step descriptions of the surgical techniques of various osteotomies of upper end of femur with high-quality per-operative photographs, preoperative planning with line diagrams, serial operative images and radiographs. These images and clinical photographs cover the long-term follow-up.The book is an eye opener for surgeons and readers to correct hip disorders by biological methods in particular proximal femoral osteotomies to propagate the science of "Hip preservation". Chapters on revision osteotomy, change of procedure and total hip replacement in post- osteotomy patients with long term follow up case studies have been included in the manual to make it an authoritative and complete work on the topic.  This book is meant for graduates, post graduates, fellows-in-training, teaching faculty and practitioners at large in gaining the skills and application of techniques of proximal femoral osteotomies in their day-to-day practice of the science of osteotomy.