Dr. In Jun Koh is a Professor of Orthopaedic Surgery at The Catholic University of Korea and Director of the Joint Reconstruction Center at Eunpyeong St. Mary’s Hospital in Seoul, Korea. His clinical and research interests focus on total knee arthroplasty, kinematic alignment, and cementless fixation. Dr. Koh has authored numerous peer-reviewed publications in leading orthopaedic journals and serves as an active reviewer and editorial contributor for several international journals. He is actively involved in the Korean Knee Society and is recognized for his work in personalized alignment and modern knee arthroplasty techniques.