1. Unit of Arthroscopy and Sports Medicine, Hesperia Hospital, Via Arqua’, Modena, Italy
2. Department of Trauma and Orthopaedic Surgery, University of Ferrara, S.Anna Hospital, Via Aldo Moro, Ferrara, Italy
3. Department of Musculoskeletal Disorders, University of Salerno, Italy
4. Institute of Science and Technology in Medicine, Keele University School of Medicine, Stoke on Trent, UK
5. Centre for Sport and Exercise Medicine, Queen Mary University of London, London, UK