بررسي اپيدميولوژيك بيماران مبتلا به شكستگي زايده ادونتوييد

Background Objectives: Odontoid process fractures consist 7% to 14% of acute cervical injuries. Neurological deficits in type II of odontoid fracture are more than other types.Material and method: Forty -three patients with odontoid fractures who admitted at Imam Khomeini and Shohada Hospitals in Tabriz from 1998 to 2001 were analyzed retrospectively and prospectively . Age ,sex, etiology, neurological signs and symptoms, associated traumas, imaging and therapeutic procedures were evaluated .Results: Ten percent of cervical injuries were of odontoid fractures, 84% of the patients were male and about 50% of patients were 20 to 50 years old.The commonest cause of trauma was vehicle accidents (60%). Four cases had type I, 22 cases had type II and 17 cases had type III fractures. Neurological deficits in type II were more than other types. Mortality rate was higher in patients with associated traumas. Patients with type I were managed with cervical collar and patients with types II and III were treated with halo- vest in 10 cases and posterior fixation in 16 ones. Conclusion: The ratio of odontoid fractures in cervical injuries was 10%, so that is near to similar studies in the literature. The age and sex ratio of patients in our study are the same as others . Motor vehicle accident played a major role in 60% of our patients. This finding was higher in rate than similar studies (48%) which seems to be of higher occurrence of vehicle accidents in our country. The proportion of type II fractures in our study was 50% but in similar studies it was 60% to 90% .