Frontal Bone in a Coronal Section of the Skull, Anterior View

Description

Cut in a coronal section and viewed from the anterior aspect, the frontal bone forms the forehead region superior to the orbits, with the glabella and superciliary arches centered on the midline. Along the inferolateral margin, the frontal bone contributes to the superior orbital rim, curving laterally toward the frontozygomatic region while remaining continuous medially with the frontal process area above the nasal root. Within the diploic space of the frontal bone, paired frontal sinuses sit superior to the nasal cavity, separated by an intersinus septum and positioned deep to the anterior table. That relationship between the superior orbital margin, anterior cranial contour, and frontal sinus cavities matters in both trauma and endoscopic sinus work. Frontal sinus fractures can violate the anterior table, posterior table, or nasofrontal outflow tract, and this coronal slice helps you relate the sinus floor to the orbit and nasal cavity when considering risks like CSF leak or mucocele formation. Depth and asymmetry vary. Planning depends on it. Common use cases include teaching paranasal sinus anatomy in gross anatomy and head and neck modules, illustrating the frontal recess and frontal sinus drainage pathway for otolaryngology texts, and supporting radiology correlation when explaining coronal CT of the frontal sinus and superior orbital rim. It also suits neurosurgical and craniofacial references that need a clean depiction of the frontal bone’s anterior contour and sinus position without mandibular distraction. Anatomical accuracy verified by SciePro's Medical Advisory Board.