Triplanar

Ankle Fracture

Ossification

 

Distal tibia

- appears by 2 years

- closed at maturity

- asymmetrical closure

- central initially, then posteromedial to anterolateral

- accounts for Tillaux and Triplanar fractures

 

Distal fibula

- appears by 2 years

- closes 2 years after distal tibia

 

Medial Malleolar Extension

- begins age 7

- closes age 10