RT Journal Article SR Electronic T1 Italian consensus conference on guidelines for conservative treatment on lower limb muscle injuries in athlete JF BMJ Open Sport & Exercise Medicine JO BMJ OPEN SP EX MED FD BMJ Publishing Group Ltd SP e000323 DO 10.1136/bmjsem-2017-000323 VO 4 IS 1 A1 Gian Nicola Bisciotti A1 Piero Volpi A1 Maurizio Amato A1 Giampietro Alberti A1 Francesco Allegra A1 Alessandro Aprato A1 Matteo Artina A1 Alessio Auci A1 Corrado Bait A1 Gian Matteo Bastieri A1 Luca Balzarini A1 Andrea Belli A1 Gianandrea Bellini A1 Pierfrancesco Bettinsoli A1 Alessandro Bisciotti A1 Andrea Bisciotti A1 Stefano Bona A1 Lorenzo Brambilla A1 Marco Bresciani A1 Michele Buffoli A1 Filippo Calanna A1 Gian Luigi Canata A1 Davide Cardinali A1 Giulia Carimati A1 Gabriella Cassaghi A1 Enrico Cautero A1 Emanuele Cena A1 Barbara Corradini A1 Alessandro Corsini A1 Cristina D'Agostino A1 Massimo De Donato A1 Giacomo Delle Rose A1 Francesco Di Marzo A1 Francesco Di Pietto A1 Drapchind Enrica A1 Cristiano Eirale A1 Luigi Febbrari A1 Paolo Ferrua A1 Andrea Foglia A1 Alberto Galbiati A1 Alberto Gheza A1 Carlo Giammattei A1 Francesco Masia A1 Gianluca Melegati A1 Biagio Moretti A1 Lorenzo Moretti A1 Roberto Niccolai A1 Antonio Orgiani A1 Claudio Orizio A1 Andrea Pantalone A1 Federica Parra A1 Paolo Patroni A1 Maria Teresa Pereira Ruiz A1 Marzio Perri A1 Stefano Petrillo A1 Luca Pulici A1 Alessandro Quaglia A1 Luca Ricciotti A1 Francesco Rosa A1 Nicola Sasso A1 Claudio Sprenger A1 Chiara Tarantola A1 Fabio Gianpaolo Tenconi A1 Fabio Tosi A1 Michele Trainini A1 Agostino Tucciarone A1 Ali Yekdah A1 Zarko Vuckovic A1 Raul Zini A1 Karim Chamari YR 2018 UL http://bmjopensem.bmj.com/content/4/1/e000323.abstract AB Provide the state of the art concerning (1) biology and aetiology, (2) classification, (3) clinical assessment and (4) conservative treatment of lower limb muscle injuries (MI) in athletes. Seventy international experts with different medical backgrounds participated in the consensus conference. They discussed and approved a consensus composed of four sections which are presented in these documents. This paper represents a synthesis of the consensus conference, the following four sections are discussed: (i) The biology and aetiology of MIs. A definition of MI was formulated and some key points concerning physiology and pathogenesis of MIs were discussed. (ii) The MI classification. A classification of MIs was proposed. (iii) The MI clinical assessment, in which were discussed anamnesis, inspection and clinical examination and are provided the relative guidelines. (iv) The MI conservative treatment, in which are provided the guidelines for conservative treatment based on the severity of the lesion. Furthermore, instrumental therapy and pharmacological treatment were discussed. Knowledge of the aetiology and biology of MIs is an essential prerequisite in order to plan and conduct a rehabilitation plan. Another important aspect is the use of a rational MI classification on prognostic values. We propose a classification based on radiological investigations performed by ultrasonography and MRI strongly linked to prognostic factors. Furthermore, the consensus conference results will able to provide fundamental guidelines for diagnostic and rehabilitation practice, also considering instrumental therapy and pharmacological treatment of MI. Expert opinion, level IV.