Morphometric Analyses of the Caroticoclinoid and Interclinoid Foramina: A Study in Brazilian Dry Skulls

The caroticoclinoid (CF) and the interclinoid (IF) foramina are variant formations of the middle cranial fossa, which result from idiopathic and possibly atavistic ossifications of the caroticoclinoid and interclinoid ligaments, respectively. Topographically, these foramina are intimately associated...

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Bibliographic Details
Published in:International journal of morphology 2021-10, Vol.39 (5), p.1345-1352
Main Authors: de-Oliveira, Kennedy Martinez, de-Almeida, Valério Landim, Benevenuto, Gabriel das Chagas, de-Faria, Gustavo Maia, Silva, Ana Clara Camillato e, Costa, Thayná Cristina Ferreira, de-Oliveira, Daniel Gonçalves, Bueno, Leonardo Braga, Rodrigues, Pedro Lucas, Peixoto, Marcos Túlio Castro, Gomes, Talita Cardoso, Oliveira, Maísa de Fátima Satiro, Gonçalves, Giuliano Roberto, Grecco, Leandro Henrique
Format: Article
Language:eng ; por
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ANATOMY & MORPHOLOGY
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Summary:The caroticoclinoid (CF) and the interclinoid (IF) foramina are variant formations of the middle cranial fossa, which result from idiopathic and possibly atavistic ossifications of the caroticoclinoid and interclinoid ligaments, respectively. Topographically, these foramina are intimately associated, to varying degrees, depending on their conformations, with the neurovascular elements of the paraclinoid region and have important clinical and surgical significance. Thus, this study, conducted from 38 dry skulls belonging to the shared collection of the Federal University of Juiz de Fora, Governador Valadares campus, revealed 11 skulls (28.95 %) with one of the two complete formations - the caroticoclinoid or the interclinoid, and in 6 skulls the caroticoclinoid foramen occurred uni or bilaterally. As a result, 50 % of these skulls presented the CF exclusively on the right (or 62.5 % of the total number of variant foramina), with an average transverse diameter of 4.91 mm and 5.8 mm AP (anteroposterior) diameter and an average area of 22.5 mm2. Concerning the IF, the findings occurred in 5 skulls with variable distributions between the clinoid processes and lateralities. The average length of the bone bridges in the IF was 7.7 mm. In conclusion, detailed anatomical knowledge of the caroticoclinoid and the interclinoid foramina is fundamental to the practice of neurosurgical procedures, since they have intimate relationships at a location of high structural complexity.
ISSN:0717-9502
0717-9502
DOI:10.4067/S0717-95022021000501345