Alessandro Ruggiero
University of Salerno (Italy)

Biotribology in arthroplasty: toward the accurate in-silico wear prediction

Abstract
Nowadays, arthroplasty is one of the most successful orthopedic surgical procedures, although it involves challenges to overcome. The patients undergoing total arthroplasty now includes younger and more active ones who require a broad range of motion and a longer service lifetime for the replaced joints. Wear is still one of the main issues affecting joint prostheses endurance, causing loosening and, eventually, implants failure. Actual in vitro wear tests (simulators) have a long duration, are very expensive and does not take into account all the possible daily activities of the patients; thus, the challenge to obtain a complete in silico tribological and dynamical model of the (bio)tribo-systems could give the possibility to overcome the actual testing procedures and could contribute as tool for a more and more accurate tribological design of human prostheses.

The talk is devoted to give an overview of the last research results toward this aim, underlining some open problems in contact mechanics, numerical stress-strain analysis, musculoskeletal multibody modeling, synovial lubrication modeling (boundary/mixed, hydro-dynamic and EHD), with the aim to establish future research cooperation with the colleagues attending BIOMDLORE 2020.

Bio
Alessandro Ruggiero is an Associate Professor, qualified as a full professor in 2017, at the Department of Industrial Engineering, University of Salerno (Italy). He attended a PhD course in Tribology at the University of Pisa (Italy) in 1997–1999. To date, he authored more than 180 scientific papers in indexed international journals and national and international proceedings. He serves as a referee, editor and member of the editorial board for many prestigious international journals. His current research interests are focused on (bio)tribology, dynamics of mechanical systems, noise and vibration control.