Masashi Yamazaki received his medical degree from Chiba University and is currently serving as Emeritus Professor at the University of Tsukuba Institute of Medicine (2024-present). He worked as an Assistant at Chiba University Hospital (1996-2004), Assistant Professor (2004-2007), and Associate Professor at Chiba University Graduate School of Medicine (2008-2011). In 2011, he moved to the University of Tsukuba and was promoted to Full Professor (2011-2023). His research topics mainly include the following: Orthopaedic surgery, medical engineering assessment, and assistive medical technology, with particular focus on biomechanics and rehabilitation engineering applications in orthopedics.