Type : Phenotype or locus, molecular basis unknown;
Alternative titles and symbols : Tarsal fusion;
Description : Tarsal coalition is a fibrous, cartilaginous, or osseous union of two or more tarsal
bones and is of congenital origin. Calcaneonavicular and middle-facet talocalcaneal
coalitions are the most common (summary by Mosier and Asher, 1984).;