Dr. Muhammad Fathi Bin Hayyun is a distinguished Consultant Orthopaedic (Arthroplasty Surgeon) renowned for his expertise in joint replacement surgery. He is a Clinical Specialist at Hospital Canselor Tuanku Muhriz, UKM, and is recognized for pioneering techniques such as primary Total Knee Replacement (TKR) with supplementary locking plates for complex tibial plateau fractures, enabling immediate weight-bearing and improved patient recovery. His research also addresses rare orthopaedic conditions, emphasizing early diagnosis for chronic hip pain. Dr. Fathi is dedicated to restoring mobility and enhancing the quality of life through innovative surgical approaches.