Professor, Dept. of Orthopedic Surg, Seoul National University College of Medicine

Former Chairman, Dept. of Orthopedic Surg, Seoul National University Bundang Hospital

Secretary General, 2016 13th International Congress of Shoulder Elbow Surgeons

Former President of Korean Shoulder and Elbow Society (2019. 4 ~ 2021. 3)

National Academy of Medicine of Korea, Active member since 2020. 1. 10

Chairman of Medical Advisory Committee

Korean Baseball Organization

Korean Skating Organization