Alexander VaccaroProfessor, Thomas Jefferson University Hospital Pennsylvania, USA Brian W Su MDSpine Surgeon, Mt. Tam Orthopaedics and Spine Centre, Marin General Hospital, Greenbrae, CA, United StatesYan Wang MD Prof. & Director, Department of Orthopaedics, The General Hospital of Chinese People’s Liberation Army, Beijing, ChinaMarcel F. Dvorak MD, FRCSCProfessor of Orthopaedics, University of British Columbia, CanadaH Michael Mayer MDProfessor of Neurosurgery & Head of Department and Co-Director, Spine Centre and Schoen Klinik Back Institute, Munich, GermanyKazuhiro Chiba MD PhDDirector, Kitasato University, Kitasato Institute Hospital, Minato, Tokyo, Japan Luiz Vialle MDProfessor of Orthopaedics, Head Spine Unit, Catholic University, Curitiba, Brazil Magdy Gamal Youssef MDProfessor of Spine Surgery, Ain Shams University, Khalifa El-Maamon St Cairo, Cairo Governorate, Egypt S Rajasekaran MS, DNB,FRCS (Ed), M.Ch (Liv), FACS, FRCS(Eng),Ph.D.Chairman, Department of Orthopaedics and Spine Surgery, Ganga Hospital, Coimbatore, Tamil Nadu, India, University of British Columbia, Canada