Ethmoidbereichsgerüst

Ethmoidbereichsgerüst is a descriptive term used to denote the structural framework of the ethmoid region—the complex bony and air-filled elements of the skull that form the central part of the nasal cavity and the medial orbital walls. It encompasses the ethmoid bone with its cribriform plate, perpendicular plate, ethmoidal labyrinth (ethmoid air cells), and the superior and middle nasal conchae, together creating support for mucosa, pathways for airflow, and partitions between the nasal and cranial cavities.

Functionally, this framework contributes to nasal airflow conditioning, olfaction (olfactory nerve fibers traverse the cribriform plate), humidification, and protection of the orbits and anterior cranial fossa. The ethmoid air cells reduce skull weight and influence resonance of the nasal cavities. Anatomical relationships include proximity to the frontal sinuses, sphenoid sinus, orbit, and anterior cranial fossa; vascular and neural elements such as ethmoidal arteries and the anterior and posterior ethmoidal nerves are closely associated.

Clinically, the ethmoid region is important in sinusitis, orbital complications, cerebrospinal fluid leaks, and skull base trauma. Its complex anatomy makes it a key consideration in endoscopic sinus and skull base surgery, where landmarks within the ethmoid framework guide safe access. Imaging with CT and endoscopic visualization are primary tools for evaluating variations, disease, and surgical planning.