On behalf of the Chinese Association of Orthopaedic Surgeons, I am pleased to invite you to the 12th Congress of Chinese Association of Orthopaedic Surgeons (CAOS 2019) taking place on May 22 to May 25 in China National Convention Center, Beijing ,China.

For the past 11 years ,the Congress has been the flagship event of our association, which surgeons and scientists around the world attend to obtain the latest information in orthopaedic field.CAOS2019 features surgical, medical, multidisciplinary, and resident/fellow learning pathways, with specialty education all day-every day during the meeting. More than ten specialties will be presented covering Arthroplasty, Spine, Trauma, Sport Medicine, Foot and Ankle, etc. The Scientific Program will include a variety of curriculum organization, such as cadaver courses, symposia. Peer reviewed abstacts’submission are encouraged and will be scheduled as oral or E-poster presentation, especially for young surgeons. The common feature of each program event is the commitment to provide the highest quality, most interesting and clinically relevant material by world-class faculty and experts.

Beijing, the nation’s political, cultural and educational center, has developed prosperously becoming an international cosmopolis, attracting millions of tourists each year.CAOS2019 is not only about education, but also the camaraderie of the CAOS：reaffirming old friendships and making new ones . We truly believe that everyone involved in the field will benefit from CAOS 2019.

Best wishes to all for a great conference!

Yan Wang, MD

President of Chinese Association of Orthopaedic Surgeons (CAOS)

President of the 12th Congress of Chinese Association of Orthopaedic Surgeons (CAOS2019)