Prof. Dai KeRong, Academician of Chinese Academy of Engineering， Foreign Corresponding Member of France National Academy of Medicine，Fellow of the Chinese Academy of Medical Sciences. Life Tenured Professor of Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine. Chief Scientist, Bone & Joint Research Center, Shanghai Jiao Tong University School of Medicine. Director, Bone & Joint Research Center, Shanghai Jiao Tong University School of Medicine. Chief Scientist of Engineering Research Center of Digital Medicine and Clinical Translation, Ministry of Education, PRC. Co-chair of 3D Printing Medical Devices Committee of China Association for Medical Devices Industry. Chief Scientist, Shanghai Medical 3D Printing Innovation Research Center.