7/24/2023 0 Comments Type 3 odontoid fractureOdontoid fractures were classified, according to Anderson and D'Alonzo, into type 1, type 2, and type 3 referred to as O1, O2, and O3 in the text, tables, and figures, using the modified classification system by Grauer et al. The patients' radiographs were reviewed retrospectively and C2 fractures were classified independently by two experienced spine surgeons. Since both hospitals are the only spinal fracture care providers in their respective region, it can be assumed that the coverage is comprehensive. Patients treated for C2 fractures at the university hospitals, but with a home address, at the time of injury, outside of the county were excluded. All patients treated at two university hospitals in Sweden (Uppsala and Malmö) between January 2002 and December 2014 with the diagnosis of a C2 fracture (ICD-10: S12.1) were extracted from the regional hospital information system. In Sweden all patient contacts within the public healthcare system are registered prospectively in a national patient registry with unique personal identification number and diagnosis codes using the 10th version of the International Classification of Diagnosis (ICD-10). This study aims at establishing the distribution of C2 fracture subtypes, as well as the age and gender specific annual incidence of various C2 fracture subgroups, and to present the current treatment strategies related to these fractures in a well-defined regional cohort. There is no population-based data available on the C2 fracture subgroup distribution with regard to patient age. The demographic changes may also have affected the incidence of C2 fractures. Consequently, a change in distribution and incidence of the various fracture types towards typical osteoporotic fractures can be anticipated. Simultaneously, demographic changes have led to a dramatic increase of the elderly population in Europe. Improved motor vehicle safety and protective gear have reduced the incidence of spinal injuries in the younger population. Since C2 fracture types are associated with different fracture mechanisms, the distribution of various fracture types differ between younger and older patients. Ĭ2 fractures can be subdivided into odontoid fractures, Hangman's fractures, and atypical fractures. Due to a stiffer lower cervical spine, the aged upper cervical spine is susceptible to bony and ligamentous injuries, which-together with reduced bone density-explains the disproportionally high proportion of upper cervical injuries in elderly. Younger patients are more susceptible to high-energy trauma-related injuries, while elderly sustain bone density-related injuries. This finding is not uncommon among spinal fractures. The most common C2 fracture-the odontoid fracture-has a biphasic age distribution with peaks both at 20–30 and at 70–80 years of age. Knowledge of these proportions facilitates future epidemiological studies of C2 fractures.įractures of the second cervical vertebra (C2) are the most common cervical spinal injury among elderly. This study presents reliable subset proportions of C2 fractures in a prospectively collected regional cohort. 40% of C2 fractures were treated surgically. There was an increasing incidence of odontoid fractures types 2 and 3 from 2002 to 2014. In the geriatric subgroup 89% of all C2 fractures were odontoid, of which 71% were type 2 and 29% type 3. Odontoid fractures were found in 183 patients, of which 2 were type 1, 127 type 2, and 54 type 3, while 26 of C2 fractures were Hangman's fractures and 24 were atypical C2 fractures. 233 patients (female 51%, age 72 ± 19 years) were treated for a C2 fracture. C2 fractures were classified into odontoid fractures types 1, 2, and 3, Hangman's fractures types 1, 2, and 3, and atypical C2 fractures. A dataset of all patients treated between 20 for C2 fractures was extracted from the regional hospital information system. This study was designed to identify the proportions of the second cervical vertebra (C2) fracture subtypes and to present age and gender specific incidences of subgroups. The currently available data on the distribution of C2 fracture subtypes is sparse.
0 Comments
Leave a Reply. |