Subtypes | Configuration of the fracture | Status of the column cortex | Status of the ACL | Injury mechanism | Surgical approaches for fractures |
---|---|---|---|---|---|
I | Depression fracture of the posterolateral platform | Intact | Intact | Flexion-valgus force | Lateral window of Frosch approach |
II | Split and depression fracture of the posterolateral platform | Incomplete | Intact | Flexion-valgus force | Lateral and posterolateral windows of Frosch approaches |
III | Depression fracture of the posterolateral platform | Intact | Ruptured or tibial insertion avulsion fracture of ACL | Flexion-valgus force and internal rotation of tibia | Percutaneously or lateral window of Frosch approach |