Associate Professor Dr. Nor Hamdan Bin Mohamad Yahaya is the Head of the Department of Orthopaedics and Traumatology and Head of the Arthroplasty Unit at Hospital Canselor Tuanku Muhriz, Universiti Kebangsaan Malaysia (UKM). A Senior Consultant Orthopaedic Surgeon with over 20 years of experience, specializes in primary, complex, revision, and robotic-assisted hip and knee arthroplasty. He is the Course Director of the UKM Clinical Fellowship in Arthroplasty and actively mentors orthopaedic surgeons across the region. He has authored numerous peer-reviewed publications and is an invited speaker at regional and international orthopaedic meetings.