Bilateral Duplication of the Foramen Spinosum: A Case Report with Clinical and Developmental ImplicationsZdilla MJ1*, Cyrus LM1, Laslo JM1 and Lambert HW2
- Corresponding Author:
- Matthew J Zdilla
Department of Natural Sciences and Mathematics
West Liberty University, CSC 139; P.O. Box 295
West Liberty, WV, USA 26074
Tel: +1 304-336-8631
Fax: +1 304-336-8266
E-mail: [email protected]
Received Date: August 13, 2014; Accepted Date: September 20, 2014; Published Date: September 22, 2014
Citation: Zdilla MJ, Cyrus LM, Laslo JM, Lambert HW (2014) Bilateral Duplication of the Sphenoidal Emissary Foramen: A Case Report with Implications for Surgeries using Transovale Cannulation. Anat Physiol 4:157. doi: 10.4172/2161-0940.1000162
Copyright: © 2014 Zdilla MJ, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
In humans, the foramen spinosum (FS) is located within the sphenoid bone and transmits the middle meningeal artery (MMA). In species that evolutionarily predate humans, the FS exists within the temporal bone, the sphenosquamosal suture, or is absent altogether. It is therefore thought that, during the course of human evolution, the ossification of the posterior aspect of the greater wing of the sphenoid progressively developed around the MMA. The report documents the occurrence of a bilateral duplication of the FS in a male human skull. The report also discusses the clinical and developmental/anthropological significance. Because the foramen spinosum is utilized as a landmark for various surgical procedures involving the middle cranial fossa, the bilateral duplication of the foramen may be disorienting to the surgeon. Similarly, the dynamics of blood flow may be altered due to the bilateral bifurcation of the MMA. Because of the developmental significance of the FS, the occurrence of a bilateral duplication also has important anthropological implications.