Early osteoarthritis is novel topic for orthopedic surgeons and its process begins immediately after joint injury. The mechanical restoration of the joint surface or ligamentous stability is not sufficient to restore the homeostatic environment in the joint, and this leads to osteoarthritis, despite mechanical stability and alignment. This book sheds light on the various mechanisms and systems involved in the gradual decline of the injured joint toward manifest osteoarthritis.Published in collaboration with ISAKOS, this volume appeals to all stakeholders in surgical orthopaedics and sports medicine.