[21] They found nine non-osseous talar coalitions (two talocalcanar, seven calcaneonavicular). The CT diagnosed one osseous talocalcanear coalition and was suspicious of eight non-osseous coalitions.

Tarsal coalition is a congenital condition characterized by the aberrant union (osseous or fibrous) between 2 bones in the rearfoot, most commonly talocalcaneal coalition, calcaneonavicular ...