Stefano Gumina, MD, PhD, is Professor in Orthopedics and Traumatology at the Department of Anatomy, Histology, Legal Medicine and Orthopedics and Traumatology at the Sapienza University of Rome, Italy. Since 2008 he has worked as an orthopedic surgeon, specializing in shoulder surgery, at the same university. . In 2000 and 2001 he spent periods as a fellow at the University of Texas Health Science Center at San Antonio, the Cleveland Clinic Foundation, and the Rush Presbyterian-St Luke's Hospital at Chicago. In 2003 he obtained his doctorate in Physiopathology of the Skeletal Apparatus, focusing his attention on shoulder disorders. Associate Member of the European Society for the Surgery of the Shoulder and Elbow (ESSSE/SECEC) since 1997, he was nominated as an Ordinary Member in 2001. In 2006 he was nominated as a Corresponding Member of the American Shoulder & Elbow Surgeons. His interest in shoulder disorders and surgery dates back to 1990 and is reflected by the publication of numerous papers in Italian and international journals. He is President of the Italian Society of Shoulder and Elbow Surgery (SICSeG). Federico Alberto Grassi is Professor and Chairman of the Department of Orthopedics and Traumatology at the University of East Piedmont , Hospital "Maggiore della Carità" (Novara, Italy). He was educated at the University of Pavia (Italy), qualifying as a doctor in 1986 and specialist in Orthopedics in 1991. He then completed a Shoulder Fellowship at the University of Texas in San Antonio with Charles A. Rockwood (1991-92). Between 1992 and 2000 he served as Assistant Professor of Orthopedics and Traumatology at the University of Insubria (Varese, Italy), where he progressed to the position of Associate Professor (2001-2005) and Full Professor (2006-2008) under the direction of Paolo Cherubino. Prof. Grassi's clinical and surgical practice has always been dedicated to shoulder problems, with a special interest in artrhoplasty and trauma. He is author of several publications on different topics concerning the shoulder and editor of an Italian textbook of Orthopedics and Traumatology for medical students and junior residents. He served as President of the Italian Society of Shoulder and Elbow Surgery (SICSeG) during the 2015-16 biennium. Paolo Paladini is chief of Unit of Shoulder and Elbow Surgery of Cervesi Hospital in Cattolica (RN, Italy). He was educated at the Catholic University of Rome (Italy), qualifying as a doctor in 1993 and specialist in Orthopedics in 1999 at Ancona University. During his residency he completed a Shoulder Fellowship at the Epsom General Hospital under Dr. D.H. Mok. (1995). In 2000 he founded, with Dr. Giuseppe Porcellini, a Unit of Shoulder and Elbow surgery at Villa Serena Private Clinic in Forlì (Italy). His clinical and surgical practice has always been dedicated to shoulder and elbow problems. Author of several international publications on different topics concerning the shoulder and elbow, Dr Paladini is involved with important international societies in the field: member of Italian Society of Orthopedics (SIOT), board member of Italian Society for Shoulder and Elbow Surgery (SICSeG), corresponding member of the American Shoulder and Elbow Society (ASES), ordinary member of European Society for Shoulder and Elbow Surgery (SECEC-ESSSE), and member of its East European Support Committee.¿
