Crista Galli Of The Ethmoid Bone, Lateral View

Description

Crista galli rises as a triangular midline crest from the superior surface of the ethmoid bone, positioned anterior to the sphenoid and continuous inferiorly with the perpendicular plate at the nasal septum. From a lateral viewpoint, its anterior margin sits just posterior to the frontal bone’s nasal part, while the cribriform plate extends horizontally from its base, forming the floor of the anterior cranial fossa. Subtle surface contouring differentiates the thicker bony ridge of the crista from the thinner, sieve-like cribriform plate that transmits olfactory nerve filaments. A fixed landmark. Neurosurgeons and rhinologists treat the crista galli as more than a named projection because it anchors the anterior attachment of the falx cerebri and sits immediately adjacent to the olfactory groove, a region vulnerable in anterior skull base fractures with post-traumatic cerebrospinal fluid rhinorrhea and anosmia. The lateral perspective helps you read the true profile and height of the crest relative to the cribriform plate, which matters when discussing dural reflections, planning endoscopic endonasal approaches that reach the anterior cranial base, or interpreting why a fracture line through the cribriform region can spare the falx attachment yet disrupt olfactory fila. Fine lighting across the ridge clarifies the abrupt change in thickness between the vertical crest and the delicate plate. Faculty can drop this illustration into an anterior cranial fossa lecture, a head and neck anatomy lab guide, or a neurosurgical skull base chapter where the falx cerebri attachment and cribriform plate are discussed together. It also supports radiology teaching points when correlating this bony profile with CT findings around the ethmoidal roof and olfactory clefts. Anatomical accuracy verified by SciePro's Medical Advisory Board.