▶ Poster 1: Possible Sign of Osteochondritis Dissecans found in Glenoid Cavity of Korean War Casualty Hyejin Lee1,2,*, Kyungmin Ko2, Dong Hoon Shin3 1Laboratory of Bioanthropology, Paleopathology and History of Diseases, Seoul National University College of Medicine, Seoul, South Korea; 2Ministry of National Defense Agency of KIA Recovery & Identification, Seoul 06984, South Korea: 3Institute of Forensic Science, Seoul National University College of Medicine, Seoul, South Korea Although 70 years have passed since the armistice agreement, there is still tension between the South and North Korea. As part of inter-Korean reconciliation, the joint excavation project of Korean war casualties in the demilitarized zone (DMZ) began in 2018. Unfortunately for unresolving political issues, the current joint excavation is under the unilateral leadership of South Korea only a limited area called Arrowhead ridge. A total of four battles in this ridge resulted in the KIA (Killed in Action)