Affiliation: | (1) Department of Orthopaedics, University of Athens, Attikon University, Hospital, Haidari, Greece;(2) Department of Orthopaedics, University of Athens, Agia Olga General, Hospital, N. Ionia, Greece;(3) Department of Orthopaedics, KAT General Hospital, Kifissia, Greece;(4) Department of Orthopaedics, University of Crete, Herakleion, Greece |