Talonavicular coalition is one of the less common types of tarsal coalitions. The other uncommon types are calcaneocuboid, and cubonavicular. The most common types of coalition are the calcaneonavicular (~45%) and the talocalcaneal (~45%). 

This case was submitted with supervision and input from:

Soni C. Chawla, M.D.
Associate Professor
Department of Radiological Sciences
David Geffen School of Medicine at UCLA
Olive View - UCLA Medical Center