Andrea Celli is an Orthopedic Surgeon at the Shoulder and Elbow Unit at Hesperia Hospital in Modena, Italy. He has dedicated his training to shoulder and elbow surgery, with several fellowships in particular to the Mayo Clinic where he was able to hone his expertise in elbow surgery, cooperating with the Orthopedic department, in particular with Dr. Morrey. He has written and prepared numerous publications and presentations for national and international conferences on elbow and shoulder surgery. He is a member of the Italian Society of Shoulder and Elbow Surgery, International Society of Arthroscopy, Knee Surgery and Orthropaedic Sport Medicine,  honorary member of the South American Society of Shoulder and Elbow Surgery, and a member of the Mayo Elbow Club. He is a reviewer of the Journal of Shoulder and Elbow Shoulder Surgery and of the Musculoskeletal Journal and other journals. Luigi Celli is currently responsible for the Shoulder and Elbow Unit at Hesperia Hospitalin Modena, Italy. From 1990 to 2011 he was Director of the Orthopedic and Traumatology Unit at University Hospital, Policlinico of Modena, Italy. He is currently chief for different groups of study and research in elbow and shoulder surgery. Prof. Celli was a founding member of the Italian Society of Shoulder and Elbow Surgery, which he was president of for several years. He is also a member of the European Society of Shoulder and Elbow Surgery (board member and executive committee member 1998-2006), and an associated member of the American Society of Surgery - Shoulder and Elbow.  He is the author of many publications and presentations, as well as the editor of many books, in the field of upper limb surgeries and in particular on shoulder, elbow and peripheral nerve disorders.