Andrew Howard, Theddy Slongo
The pattern of this fracture is an osseo-ligamentous avulsion of the lateral epicondyle. The classification is independent of fragment size and displacement.
This very rare fracture tends to occur in combination with elbow dislocation.
Pearl: If a medial shift is seen, consider the possibility that the elbow luxation is accompanied by a lateral epicondylar avulsion and investigate accordingly.
This fracture is only visible on an x-ray if there is a bony component, mostly seen in older children.
Additional ultrasonography and/or MRI are indicated if there is diagnostic uncertainty.
Relevant clinical features include:
Older child (older than 6 years):