| Classification | Description | Notes |
| Type 1 | Single-segment central fragment | |
| Type 2 | Comminuted central fragment not involving the medial canthal tendon insertion | |
| Type 3 | Comminuted central fragment extending into the medial canthal tendon insertion |
References:
Hopper, R. A., et al. (2006). “Diagnosis of Midface Fractures with CT: What the Surgeon Needs to Know.” Radiographics 26(3): 783-793.
Markowitz, B. L., et al. (1991). “Management of the medial canthal tendon in nasoethmoid orbital fractures: the importance of the central fragment in classification and treatment.” Plast Reconstr Surg 87(5): 843-853.