Morphometry of Rolandic Fissure and Bridge of Wagner

Abstract

Abstract Background: Robert Wagner found a rare communication between precentral and postcentral sulcus in the right hemisphere of the brain of mathematician C.H. Fuch. He also documented right postcentral gyrus showing a bridge connecting it to posterior gyrus. Both these bridges are considered as bridge of Wagner. The aim of this study is to find the incidence and asymmetry of Wagner’s bridge and to also determine morphometry of Rolandic fissure. Methodology: This is a descriptive study of 50 hemispheres from 25 formalin embalmed cadavers used for regular undergraduate classes to determine morphometry of Rolandic fissure and bridge of Wagner. Results: The length of Rolandic fissure was found more on the left side (10.49 cm). The depth of Rolandic fissure was found more in male hemispheres (1.52 cm). Interrupted precentral and postcentral sulcus was seen and a bridge of Wagner connecting the gyrus with adjacent gyrus was noted. Conclusion: Asymmetry was seen in the morphometry of the Central sulcus. A bridge of Wagner from pre and postcentral gyrus to adjacent gyrus anteriorly and posteriorly was seen. Knowledge of morphometry and bridge of Wagner will guide neurosurgeons during operative procedures.