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| Type | Description |
|---|---|
| Type 1 | Non- or minimally displaced (<3 mm) |
| Type 2 | Minimally displaced with intact posterior hinge |
| Type 3a | Completely displaced involving a small portion of the eminence |
| Type 3b | Completely displaced involving the majority of the tibial spine |
| Type 4 | Completely displaced, rotated, and comminuted |
