| Type I
Nasal-orbital-ethmoidal fractures.
The simplest form of nasal-orbital-ethmoid fracture involves only one portion of the medial orbital rim with its attached medial canthal tendon. It may occur in a bilateral or unilateral form. When the bilateral complete type 1 fracture occurs, there is no medial canthal tendon displacement. |
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| Type II
Nasal-orbital-ethmoidal fractures.
These fractures may occur in a bilateral or unilateral form and may be large segments or comminuted. Most commonly, the canthus remains attached to a large central segment. |
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| Type III
Nasal-orbital-ethmoidal fractures.
This fracture includes comminution involving the central fragment of bone where the medial canthal tendon attaches. The canthus is rarely avulsed completely, but on occasion the fragments of bone are so small that reconstruction is not possible. |
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