This book, “A Practical Guidebook in Femoral Neck System”, aims to provide a comprehensive overview of the FNS, detailing its design, biomechanical principles, clinical applications, and rehabilitation protocols. Our objective is to present a thorough examination of the FNS through the lens of current evidence and clinical experience.This book is the culmination of years of hard work, research, and collaboration. We have meticulously compiled the latest data, clinical studies, and expert opinions to provide a thorough understanding of the FNS. We also presented the FNS procedure, including an explanation of the equipment as well as tips and tactics for effective FNS fixation surgery. Hence, it combines more practical and theoretical parts of FNS. It also discusses FNS's complications and reasons behind it, which helps you understand when and how to utilize it effectively, ultimately improving patient outcomes.This book has chapters including anecdotal notes for the fixation system, pearls and wisdom to use this system flawlessly, and hitherto tackling of complications if otherwise happens in a seamless manner, hence a complete, crisp coterie on FNS implant with charts, figures, and diagrams as special value additions.