Dr. Stephen Mellon

Biography

Dr. Stephen Mellon, Associate Professor of Orthopaedic Biomechanics at the University of Oxford's Medical Sciences Division, conducts translational research focusing on joint replacement outcomes, implant design, and dynamic joint assessment. He closely collaborates with Professor David Murray to investigate how patient- and surgery-related factors influence the outcomes of knee and hip arthroplasties. Dr. Mellon has particular expertise in radiostereometric analysis (RSA) and is involved in RSA-based studies that evaluate implant fixation and long-term performance. He leads the development of CAT&MAUS (Computer-Aided Tracking Motion Analysis Ultrasound), a novel system designed to assess 3D joint motion using standard ultrasound imaging. This system has been validated for clinical use and has the potential to transform joint kinematics evaluation in routine orthopaedic practice. His research is supported by various funding initiatives, including Versus Arthritis and the EPSRC Impact Acceleration Account. He collaborates with the Oxford Robotics Institute to explore new approaches in navigated orthopaedic surgery and is interested in the application of artificial intelligence in medical imaging and clinical decision support, focusing on explainability and real-world deployment in orthopaedics. Additionally, he supervises students at the Podium Institute of Sports Medicine Technology, especially in areas related to biomechanics, imaging, and motion analysis.

Research Interests

Experience