The annual COA2019 international academic conference was held in Shanghai international conference center from November 14 to 17. The 21st academic conference on orthopedics of the Chinese medical association and the 14th COA international academic conference were held simultaneously by the Chinese medical association and the Chinese society of bone science.

Today, health is an eternal theme of human beings. When health is an important basis for people to measure happiness, the health industry will become a new engine of the world economy. Joint is one of the shadow of the threat to human health, is also a stumbling block to block people's health, as medical advances, is a series of joint disease, medical scientists can control or even cure the disease, therefore, artificial joints is essential for bone disease patients adjuvant therapy device, and the patient's rehabilitation, life care, and can return to society. In the 1960s, the medical community gradually unveiled its mysterious veil, after half a century of exploration, the importance of artificial joints has been recognized, in the orthopedic medical community as a variety of artificial joints as "the spark of bone."
At the LDK event held on the conference site, famous orthopaedic experts have come on stage. Professor qu tiebing, a senior orthopaedic expert in China, analyzed and expounded the focus and prospect of artificial knee prosthesis. Professor sun yongqiang, President of luoyang bonesetting hospital in henan province, who is known as the great love lancet, practiced the techniques of knee joint replacement. Professor shang xifu, orthopaedic director of the first affiliated hospital of University of Science and Technology of China, explained the difficulties and surgical skills of DAA operation. Professor bi wenzhi, director of the department of bone oncology, Beijing 301 hospital, imparts his experience on the new development of LDK special prosthesis in limb salvage therapy of bone tumors. The experts provided valuable theoretical guidance and rich practical experience to the young doctors present.
At home and abroad, the major orthopaedic industry gathered, through the academic conference to show outstanding results, not only leading the healthy development of the industry, but also can be regarded as an innovative and progressive industry event.