Luo Xianzheng, chief physician of orthopedics, professor and postgraduate tutor. 1930 was born, 1954 graduated from Xiangya Medical College. He used to be the director of orthopedics, the director of joint reconstruction center and the deputy director of biomechanics center of Capital Medical University. He used to be the third, fourth and fifth session of the Standing Committee of China Orthopedic Society and the vice chairman of China Osteoporosis and Osteoporosis Society. Standing editorial board member of Chinese Orthopedic Journal, member of expert group of Friendship Hospital, deputy editor of China Journal of Osteooncology and Osteopathy, and consultant of China Osteoporosis and Osteoporosis Society, enjoying special allowance from the State Council. Professor Luo Xianzheng has been engaged in orthopedic medical treatment, scientific research and teaching for a long time, and has made profound achievements in artificial joints, trauma and osteoporotic fractures. Won 9 scientific and technological achievement awards from Beijing Municipal Bureau, and national academic achievement award 1 item. Editor-in-chief of many monographs such as Intramedullary Nail Fixation, Artificial Hip Joint and Basic and Clinical Osteoporosis, and published more than 50 academic papers. He has presided over dozens of national academic conferences on artificial joints, interlocking intramedullary nails and osteoporotic fractures, and won favorable comments from domestic academic circles.

Qiu Guixing is an academician of China Academy of Engineering. He is currently the director of surgery, orthopedics, chief physician, professor and doctoral supervisor of Peking Union Medical College Hospital. He is also the chairman of the Osteology Branch of the Chinese Medical Association, the executive director of the 23rd Council of the Chinese Medical Association, the executive director of the 7th Council of the Beijing Medical Association, the editor-in-chief of the Chinese Journal of Orthopaedics, the editorial board of the Journal of Orthopaedics (ApoA), the Chinese chairman of the China-EU Orthopaedics Academic Exchange Committee, and the international

Early introduction and active promotion of the clinical application of spine fixators such as CD, TSRH and CDH systems, especially the clinical and basic research of lordosis for more than 20 years, put forward the classification method of China scoliosis (PUMC Concordia Classification) for the first time in the world. Its project "Series Research and Clinical Application of Idiopathic Scoliosis" won the second prize of National Science and Technology Progress Award.

There are nearly 30 monographs, such as Orthopedic Surgery (3rd Edition), New Spinal Surgery, Basic and Clinical Osteoporosis, Senior Physician's Desk Series-Osteology and Artificial Hip Joint, and Surgery of Eight-year Teaching Materials in Medical Colleges, and 348 articles have been published in various magazines at home and abroad. He has won 2 national science and technology second prizes, Beijing science and technology second prize, Chinese medicine science and technology second prize, State Education Commission third prize, Ministry of Health second prize and so on. And won a number of hospital medical achievement awards and scientific and technological achievement awards, and was awarded five patents: enjoying special government allowances from the State Council.

Professor Liang Guorui, head and professor of the Department of Orthopaedics and Trauma, The Chinese University of Hong Kong, Director of Orthopaedic Training Center, Orthopaedic Consultant and Orthopaedic Director, Prince of Wales Hospital, Hong Kong. Editors of professional magazines at home and abroad, such as lnjury and Chinese Journal of Traumatic Orthopaedics, have been engaged in clinical, scientific research and teaching work of traumatic orthopedics for 40 years, with rich writings and profound attainments. At present, the main research directions are fracture healing, internal fixation and prevention of osteoporotic fractures, and the application of computer-aided navigation in orthopedics. Being at the forefront of various fields of trauma orthopedics in China, it enjoys a very high academic status in the world. A lot of work has been done for the popularization and application of interlocking intramedullary nail technology in China and Asia, and many traumatic orthopedic talents have been trained.