Is conventional radiography still relevant for evaluating the acromioclavicular joint? - Guillotin C; Koch G; Metais P; Gallinet D; Godeneche A; Labattut L; Collin P; Bonnevialle N; Barth J; Garret J; Clavert P (Orthopaedics & traumatology, surgery & research : OTSR, 2020)