Complete articular fracture, simple articular and simple metaphyseal

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:

• Above the transcondylar axis (13C1.1)
• Through or below the transcondylar axis (13C1.3)

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