On April 26, 2011, the Department of Orthopedics of Shanghai Changzheng Hospital affiliated to the Second Military Medical University held a thesis defense meeting for the 2008 class of doctoral students in surgery (orthopedics), inviting famous domestic orthopedic experts such as Professor Dai Liyang, Professor Jiang Jianyuan, Professor Dong Jian, Professor Wang Qiugen and Professor Shen Qiang as the defense judges, successfully passed the thesis defense, and the thesis received unanimous praise from experts. Wenhua Xing, Department of Cervical Spine Surgery, The Second Affiliated Hospital of Inner Mongolia Medical University