Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/235967
Type: Artigo de periódico
Title: Computed Tomography Evaluation Of The Normal Craniocervical Junction Craniometry In 100 Asymptomatic Patients.
Author: Batista, Ulysses C
Joaquim, Andrei F
Fernandes, Yvens B
Mathias, Roger N
Ghizoni, Enrico
Tedeschi, Helder
Abstract: Most of the craniometric relationships of the normal craniocervical junction (CCJ), especially those related to angular craniometry, are still poorly studied and based on measurements taken from simple plain radiographs. In this study, the authors performed a craniometric evaluation of the CCJ in a population without known CCJ anomalies. The purpose of the study was to evaluate the normal CCJ craniometry based on measurements obtained from CT scans. The authors analyzed 100 consecutive CCJ CT scans obtained in adult patients who were admitted at their tertiary hospital for treatment of non-CCJ conditions between 2010 and 2012. A total of 17 craniometrical measurements were performed, including the relation of the odontoid with the cranial base, the atlantodental interval (ADI), the clivus length, the clivus-canal angle (CCA)-the angle formed by the clivus and the upper cervical spine, and the basal angle. The mean age of the 100 patients was 50.6 years, and the group included 52 men (52%) and 48 women (48%). In 5 patients (5%), the tip of the odontoid process was more than 2 mm above the Chamberlain line, and in one of these 5 patients (1% of the study group). it was more than 5 mm above it. One patient had a Grabb-Oakes measurement above 9 mm (suggesting ventral cervicomedullary encroachment). The mean ADI value was 1.1 mm. The thickness of the external occipital protuberance ranged from 7.42 to 22.36 mm. The mean clivus length was 44.74 mm, the mean CCA was 153.68° (range 132.32°-173.95°), and the mean basal angle was 113.73° (ranging from 97.06°-133.26°). The data obtained in this study can be useful for evaluating anomalies of the CCJ in comparison with normal parameters, potentially improving the diagnostic criteria of these anomalies. When evaluating CCJ malformations, one should take into account the normal ranges based on CT scans, with more precise bone landmarks, instead of those obtained from simple plain radiographs.
Subject: Adi = Atlantodental Interval
Cca = Clivus-canal Angle (angle Formed By A Line Extending From The Surface Of The Clivus And A Line Extending From The Inferodorsal Portion Of The C-2 Body)
Ccj = Cranicervical Junction
Cm = Chiari Malformation
Ct Scan
Eop = External Occipital Protuberance
Fm = Foramen Magnum
Craniocervical Junction
Craniometry
Normal
Relationship
Citation: Neurosurgical Focus. v. 38, n. 4, p. E5, 2015-Apr.
Rights: fechado
Identifier DOI: 10.3171/2015.1.FOCUS14642
Address: http://www.ncbi.nlm.nih.gov/pubmed/25828499
Date Issue: 2015
Appears in Collections:Unicamp - Artigos e Outros Documentos

Files in This Item:
File SizeFormat 
pmed_25828499.pdf4.28 MBAdobe PDFView/Open


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.