Tehran University of Medical Sciences Acta Medica Iranica 0044-6025 48 5 2010 10 15 304 307 EN Fatholah Behnoud Department of ENT, Besat Hospital, School of Medicine, Hamedan University of Medical Sciences, Tehran, Iran. Mohammad Shayani Nasab Department of ENT, Besat Hospital, School of Medicine, Hamedan University of Medical Sciences, Tehran, Iran. Azam Alizamir Department of ENT, Besat Hospital, School of Medicine, Hamedan University of Medical Sciences, Tehran, Iran. 2015 09 28 Investigating the frequency of traumatic nasal bone fracture in patients with and without old septal deviation and possible deviation. Prospective study of 105 patients with nose trauma conducted and cases were divided into two groups: a study group 35 patients with nasal fracture and a control group of 70 patients without nasal fracture. Diagnosis of septal condition was made by anterior rhinos copy and endoscopy using manipulation of septum. 31 (89%) of the patients with nasal fracture after trauma were diagnosed with old septal deviation. In comparison, only 39 (34%) of patients in the control group were diagnosed with old septal deviation. In comparison, only 39 (54%) of patients in the control group were diagnosed with old septal deviation. Existing old septal deviation significantly increases the risk of traumatic nasal bone fracture. https://acta.tums.ac.ir/index.php/acta/article/view/4053 https://acta.tums.ac.ir/index.php/acta/article/download/4053/4028