This book summarizes the authors' decades of clinical experience and theoretical studies in essential principles, diagnosis, treatment, and rehabilitation of the AVN of the femoral head. The authors analyze from an interdisciplinary perspective such as orthopedic biomechanics, investigates the general Pattern in femoral head remodeling and proposes the hip joint repair guidelines and stress-electromechanical principles. Chinese medical therapies in this book have been proven effective by numerous clinical cases. The diagnosis and treatment methods are therefore listed as top 10 popularization project by the State Administration of Traditional Chinese Medicine and supported by National Natural Science Foundation of China.This book can be used as a reference for orthopedic and traumatology doctors and medical.