This fracture type is classified by the AO/OTA as 13C1 when both the articular and the metaphyseal components are simple fractures.
The mechanical properties of the distal humerus are based on a triangle of stability, comprising the medial and lateral columns, and the transverse condylar mass. In these fractures, all 3 sides of this triangle must be restored.
Images taken from Orozco R, et al. (1998) Atlas of Internal Fixation. Used with kind permission.