Anatomic Classification of Frontal Sinus Fractures

Gonty et al reported an anatomic classification for frontal sinus fractures.

Fracture Location	Type
anterior table	I
anterior and posterior tables	II
posterior table	III
through and through	IV

Subclassification for Type I

Fracture Location	Type I
anterior table fracture only	Ia
anterior table and supraorbital rim fractures	Ib
anterior table and nasoethmoidal complex fractures	Ic

Subclassification for Type II

Fracture Location	Type II
linear, transverse	IIa1
linear, vertical	IIa2
comminuted	IIb1
comminuted and nasoethmoidal complex fractures	IIb2

where:

• In the implementation only one linear category is given for Type II in order to simplify the spreadsheet.

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