13B1 Partial articular, lateral sagittal fracture
Definition
These fractures are classified by the AO/OTA as 13B1.
The fracture may be one of the following types:
- Simple transtrochlear fracture (13B1.1)
- Capitellar fracture (13B1.2), transcapitellar (q), or between capitellum and trochlea (r)
- Fragmentary transtrochlear fracture (13B1.3)
Lateral and frontal fracture types overlap.
Further characteristics
The partial articular multifragmentary fractures are often associated with impaction of the posterior part of the lateral column and/or the posterior trochlea.
X-ray
AP x-ray of an adult elbow showing a partial articular fracture with fragmentation of the fracture zone (fragmentary transtrochlear fracture)
3-D CT
3-D CT reconstruction image of the fragmentary transtrochlear fracture case above
