Frontal bone (Os frontale)
Educational content only — not medical advice.
Anatomy
An unpaired bone forming the forehead, the roof of each orbit and the anterior part of the cranial vault; it contains an air-filled frontal sinus lined by mucosa that drains into the nasal cavity. Its supraorbital margin carries the supraorbital notch, and it joins the parietal bones at the coronal suture.
Clinical notes
Frontal bone fractures in facial trauma may extend into the orbital roof and threaten the eye; blockage of the frontal sinus duct causes chronic sinusitis that may need surgical drainage.
Related structures
Educational references
FAQ
What is the role of the Frontal bone?
An unpaired bone forming the forehead, the roof of each orbit and the anterior part of the cranial vault; it contains an air-filled frontal sinus lined by mucosa that drains into the nasal cavity. Its supraorbital margin carries the supraorbital notch, and it joins the parietal bones at the coronal suture.
Why is the Frontal bone clinically important?
Frontal bone fractures in facial trauma may extend into the orbital roof and threaten the eye; blockage of the frontal sinus duct causes chronic sinusitis that may need surgical drainage.
Source & license
Derived from Z-Anatomy (Gauthier Kervyn et al.), CC BY-SA 4.0 (https://creativecommons.org/licenses/by-sa/4.0/); upstream geometry from BodyParts3D, © The Database Center for Life Science. license details