Harry Hoyen, Simon Lambert, Joideep Phadnis
This fracture type is classified by the AO/OTA as 13C1 when both the articular and the metaphyseal components are simple fractures.
The metaphyseal fracture may be:
All three sides of the triangle of stability are broken.
This is an AP x-ray showing an example of a high (above the transcondylar axis) fracture (13C1.1).
Images taken from Orozco R, et al. (1998) Atlas of Internal Fixation. Used with kind permission.
Lateral view of the same case