Tarsal Coalitions

Tarsal CoalitionsTarsal coalitionsCongenital bridging of two or more tarsal bones of the footFailure in segmentation and differentiation of primitive mesenchymeMost commonly causes peroneal spastic flatfoot Incidence in the population is less than 1%

Types of coalitionsSynostosis Osseous bridgeSynchondrosis Cartilaginous bridgeSyndesmosis Fibrous bridge

Location of CoalitionsTalocalcaneal ~ 45% of casesCalcaneonavicular ~ 45% of casesTalonavicular