Frontal Bone

Description

Anterior cranial anatomy is presented in lateral view with the frontal bone highlighted, extending superiorly over the forehead to the frontal squama and curving inferiorly to form the supraorbital margin and roof of the orbit. Medially, the contour leads toward the glabella and nasion region, while laterally the zygomatic process of the frontal bone projects toward the zygomatic bone at the frontozygomatic suture. The orbital plate sits inferior to the frontal squama, and the frontal contribution to the nasal cavity lies anteromedial, adjacent to the expected articulations with the nasal bones and ethmoid. Clear bony landmarks. For clinical anatomy, this projection helps you read the relationships that matter in trauma and surgery: frontal sinus and anterior table fractures, supraorbital rim injuries, and frontozygomatic disruptions all change the brow-orbit contour in predictable ways. The supraorbital notch or foramen along the superior orbital margin marks the exit of the supraorbital nerve and vessels, a frequent target for regional anesthesia and a structure at risk in coronal approaches and brow lacerations. Within the orbit, the frontal bone’s roof relates closely to the anterior cranial fossa, which explains the concern for CSF leak, pneumocephalus, or intracranial extension when fractures involve the orbital plate. This asset fits gross anatomy and head and neck anatomy teaching, craniofacial trauma modules, and surgical atlas content on frontal craniotomy corridors and orbital roof reconstruction. It also supports radiology education when paired with CT bone windows to match surface landmarks to underlying sutures and sinus boundaries. Anatomical accuracy verified by SciePro's Medical Advisory Board.