caa a22 4500 445835281 CHVBK 20180317145328.0 cr unu---uuuuu 170323e20111101xx s 000 0 eng 10.1007/s00586-011-1879-2 doi (NATIONALLICENCE)springer-10.1007/s00586-011-1879-2 Computed tomographic evaluation of odontoid process: implications for anterior screw fixation of odontoid fractures in an adult population [Elektronische Daten] [Murilo Daher, Sérgio Daher, Marcello Nogueira-Barbosa, Helton Defino] Introduction: Odontoid diameter in some individuals may not be large enough to accommodate two 3.5-mm cortical screws for anterior odontoid fracture fixation. The study was performed to evaluate, in a Brazilian population, the diameter of the odontoid process and the feasibility of using two 3.5-mm cortical screws for anterior odontoid fracture fixation. Materials and methods: Computed tomographic (CT) scans of 88 adult patients (aged 18-78years) were analyzed; 40 patients (45%) were male (mean age: 43.08years) and 48 (55%) were female (mean age: 43.39years). The minimum external and internal anteroposterior and transverse diameters of the odontoid process on sagittal and coronal planes were measured on CT multiplanar reconstructions of the cervical spine. Results: The mean value of the minimum external anteroposterior diameter was 10.83±1.08 and 7.53±1.10mm for the minimum internal anteroposterior diameter. The mean value of the minimum external transverse diameter was 9.19±0.91 and 6.07±1.08mm for the minimum internal transverse diameter. The mean AP diameter was significantly larger than the mean transverse diameter; 57 (65%) individuals had the minimum external transverse diameter >9.0mm that would allow the insertion of two 3.5-mm cortical screws with tapping, and five (6%) individuals had the minimum internal transverse diameter >8.0mm that would allow the insertion of two 3.5-mm cortical screws without tapping. Conclusions: The insertion of two 3.5-mm cortical screws was possible for anterior fixation of odontoid fracture in 57 (65%) individuals of our study, and there was no statistical difference between males and females. Springer-Verlag, 2011 Odontoid process nationallicence Dens nationallicence Quantitative computed tomography nationallicence Spiral computed nationallicence Fracture fixation nationallicence Internal nationallicence Orthopedic fixation devices nationallicence Daher Murilo Spine Division, Department of Orthopaedics and Traumatology, Federal University of Goiás (UFG), Rua 109 nº 331 aptº 301 Setor Sul, CEP 74085-090, Goiânia-Go, Brazil aut Daher Sérgio Spine Division, Department of Orthopaedics and Traumatology, Federal University of Goiás (UFG), Rua 109 nº 331 aptº 301 Setor Sul, CEP 74085-090, Goiânia-Go, Brazil aut Nogueira-Barbosa Marcello Radiology Division, Department of Internal Medicine, Ribeirao Preto School of Medicine, University of São Paulo (USP), Ribeirão Preto, Brazil aut Defino Helton Department of Biomechanics, Medicine and Rehabilitation of the Locomotor System of Ribeirão Preto School of Medicine, University of São Paulo (USP), Ribeirão Preto, SP, Brazil aut European Spine Journal Springer-Verlag 20/11(2011-11-01), 1908-1914 0940-6719 20:11<1908 2011 20 586 https://doi.org/10.1007/s00586-011-1879-2 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00586-011-1879-2 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Daher Murilo Spine Division, Department of Orthopaedics and Traumatology, Federal University of Goiás (UFG), Rua 109 nº 331 aptº 301 Setor Sul, CEP 74085-090, Goiânia-Go, Brazil aut NATIONALLICENCE 700 1- Daher Sérgio Spine Division, Department of Orthopaedics and Traumatology, Federal University of Goiás (UFG), Rua 109 nº 331 aptº 301 Setor Sul, CEP 74085-090, Goiânia-Go, Brazil aut NATIONALLICENCE 700 1- Nogueira-Barbosa Marcello Radiology Division, Department of Internal Medicine, Ribeirao Preto School of Medicine, University of São Paulo (USP), Ribeirão Preto, Brazil aut NATIONALLICENCE 700 1- Defino Helton Department of Biomechanics, Medicine and Rehabilitation of the Locomotor System of Ribeirão Preto School of Medicine, University of São Paulo (USP), Ribeirão Preto, SP, Brazil aut NATIONALLICENCE 773 0- European Spine Journal Springer-Verlag 20/11(2011-11-01), 1908-1914 0940-6719 20:11<1908 2011 20 586 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer