Andrea Ferretti, graduated in medicine and surgery, specialized in orthopaedics and traumatology and in sports medicine and was fellow of Professor Lamberto Perugia and Professor Giancarlo Puddu. Since 2000 he is Full Professor and Chairman Of Orthopaedics at Sant’Andrea University Hospital in Rome and nowadays heir and representative of the prestigious School Of Knee Surgery founded by his masters. He was visiting professor in various universities around the world. Since 1990 he is team physician of the Italian national football team. He was as volleyball player and coach in the Italian National Volleyball League.He is author of more than 350 published papers mainly in the field of knee surgery and sports medicine and author/coauthor of 3 books: one on volleyball injuries, one on sports traumatology and an orthopaedics and traumatology textbook. As a researcher, his main topics of interest have always been the treatment of anterior cruciate ligamenttears and related instability with a special focus on the role of secondary restraints (anterolateral ligament, Segond fracture) on the rotational instability, as well as the effect of extra-articular reconstructions in controlling tibial rotation and pivot shift phenomenon. He is member of the editorial board of Italian Journal of Orthopaedics and Traumatology (Springer) and reviewer of American Journal of Sports Medicine. He is invited as a speaker in all major orthopaedic international meetings, e.g. American Academy Of Orthopaedic Surgeons, American Orthopaedic Society For Sports Medicine, International Society Of Orthopaedics And Traumatology (SICOT), European Society Of Knee Surgery Sports Traumatology And Arthroscopy (ESSKA) etc.