Orthopedic surgeons’ knowledge regarding risk of radiation exposition: a survey analysis Nejat Tunçer, Ersin Kuyucu, Şafak Sayar, Gökhan Polat, İrem Erdil and İbrahim Tuncay SICOT-J, 3 (2017) 29 Published online: 07 April 2017 DOI: 10.1051/sicotj/2017008