Foramen Magnum Angle: A New Parameter for Basilar Invagination of Type B.

Autor: Nascimento JJC; Postgraduate Program in Neuropsychiatry, Federal University of Pernambuco, Recife, Brazil. Electronic address: josejailson64@gmail.com., Silva LM; Postgraduate Program in Neuropsychiatry, Federal University of Pernambuco, Recife, Brazil., Ribeiro ECO; Postgraduate Program in Biological Science, Federal University of Pernambuco, Recife, Brazil., Neto EJS; Department of Morphology, Federal University of Paraíba, João Pessoa, Brazil., Araújo-Neto SA; Diagnostic Imaging, Internal Medicine, Federal University of Paraíba, João Pessoa, Brazil., Diniz PRB; Postgraduate Program in Neuropsychiatry, Federal University of Pernambuco, Recife, Brazil; Internal Medicine Department, Clinics Hospital, Federal University of Pernambuco, Recife, Brazil; Telehealth Unit, Clinics Hospital, Federal University of Pernambuco, Recife, Brazil.
Jazyk: angličtina
Zdroj: World neurosurgery [World Neurosurg] 2021 Aug; Vol. 152, pp. 121-123. Date of Electronic Publication: 2021 Jun 12.
DOI: 10.1016/j.wneu.2021.06.028
Abstrakt: Objective: To describe the foramen magnum angle (FMA) as a new parameter for basilar invagination (BI) type B.
Methods: The FMA was performed on sagittal slice of magnetic resonance imaging (MRI) as a line from the hard palate to the opisthion (angle vertex), and another line from the opisthion to the basion. The MRIs from 31 participants with BI type B and 96 controls were used. Intraclass correlation coefficient, descriptive data, and receiver operating characteristic (ROC) curve were used for statistical analysis at the 95% confidence interval.
Results: The interobserver agreement of the FMA was 0.952. Patients with BI type B had a FMA significantly greater (25.9° ± 9.3°) than control participants (11.6° ± 4.9°) (P < 0.001). The area under the ROC curve showed a diagnostic value of 0.947. The FMA showed sensitivity 0.900 and specificity 0.854 for the cutoff criterion 17° (P < 0.001).
Conclusions: The FMA had an optimal diagnostic value that provided complementary evidence to investigate BI type B.
(Copyright © 2021 Elsevier Inc. All rights reserved.)
Databáze: MEDLINE
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