Is the omega sign a reliable landmark for the neurosurgical team? An anatomical study about the central sulcus region

Abstract

The central sulcus region is an eloquent area situated between the frontal and parietal lobes. During neurosurgical procedures, it is sometimes difficult to understand the cortical anatomy of this region. Objective: Find alternative ways to anatomically navigate in this region during neurosurgical procedures. Method: We analyzed eighty two human hemispheres using a surgical microscope and completed a review of the literature about central sulcus region. Results: In 68/82 hemispheres, the central sulcus did not reach the posterior ramus of the lateral sulcus. A knob on the second curve of the precentral gyrus was reliably identified in only 64/82 hemispheres. Conclusion: The morphometric data presented in this article can be useful as supplementary method to identify the central sulcus region landmarks