Table 2.

The classification of the flexion valgus fracture

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