Dr. Claudio Chillemi was graduated in Medicine and Surgery (110/110) in 1995 at the Catholic University of Sacred Heart in Rome and in 2000 completed his specialisation in Orthopedics and Traumatology (cum laude) at the University of Ancona. Working as an orthopaedic surgeon, he dedicated his basic research activity mainly to the elastic fibers system regulating the growing mechanism of long bones and to the tendon and cartilage healing processes. During the last decade his clinical research was centered to the shoulder pathology, focusing especially on arthroscopic technique. For this reason he partecipated to numerous international course and congresses and as a fellow, visited different European and American surgeons.  He is actually member of the Italian Shoulder and Elbow Surgery Society (SICSeG) and of the European Society for Surgery of the Shoulder and the Elbow (SECEC - ESSSE). Every year he organizes different shoulder courses and hosts surgeons from all over the world interested in the shoulder field. He has presented original research at numerous orthopedic congresses and is the author of more than 40 publications in international journals. He currently works at Istituto Chirurgico Ortopedico Traumatologico (ICOT) in Latina, Italy.   Dr Alessandro Castagna is Responsible of the Shoulder and Elbow Surgical Unit at Humanitas Reasearch Hospital in Milan, Italy. After taking his degree at La Sapienza University, in Rome, he specialized in Orthopedics and Sports Medicine. He is Adjunt Professor at Milan University and he collaborated with many teaching institutions (L’Aquila University, Bologna and Perugia Universities). Over the last twenty years, his activity was mainly devoted to shoulder injuries, with special focus on mini-invasive surgical and arthroscopic techniques. Member of several scientific societies in the field, from 2012 to 2014 he’s been president of the European Society for Surgery of the Shoulder and the Elbow (SECEC), from 2010 to 2012 he’s been president of the Italian Shoulder and Elbow Surgery Society, and he is currently member of the Board of the International Congress of Shoulder and Elbow Surgery (ICSES, www.icses.org), 2013-2022. He’s part of the medical teams of the Italian Winter Sports Federation (FISI) and the Italian Tennis Federation (FIT).   Dr. Marcello Osimani is Radiologist expert in the field of musculoskeletal system. He has done his medical degree, post-graduate in Radiology and PhD in Sapienza University of Rome, working with the best diagnostic Specialists. He is currently working as a university researcher, conducting teaching activities, research and experimentations in the field of advanced diagnostics of musculoskeletal pathology. Member of Italian Society of Medical Radiology SIRM, European Society of Radiology ESR, Author of international publications and books, medical member of Italian sports commissions CONI and organizer of workshops and congresses, he carries out his daily activity together with Orthopedic colleagues.

• 1 Rotator cuff tear: etiopathogenesis and histopathology.- 2 Rotator cuff tear: classification system.- 3 Rotator cuff tear: imaging (radiological classification).- 4 Transosseous rotator cuff repair: rationale.- 5 Transosseous and Transosseous equivalent rotator cuff repair: the difference.- 6 Transosseous tunnel: which arthroscopic device?.- 7 Transosseous rotator cuff repair: which arthroscopic technique?.- 8 Sutures configurations.- 9 Surgical indications and Complications.- 10 Post-operative rehabilitation program.- 11 Post-operative imaging.- 12 Biomechanical and Biological Considerations.- 13 Economic Aspects.- 14 Conclusions.