Rare Cuboid-Navicular Tarsal Coalition in Female Sisters: A Case Report

Tarsal coalitions are a rare inherited condition believed to be failure of mesenchymal differentiation. Although often asymptomatic, microfracturing at the level of a coalition is believed to be a cause of ongoing midfoot pain in the adolescent. Cuboid-navicular coalitions are even more rare with roughly few reported cases to date. We present a case of symptomatic cuboid-navicular fibrocartilaginous coalition in adolescent sisters with a chief complaint of chronic midfoot pain originally treated at an outside facility. Following exhaustion of conservative modalities, surgical resection of the tarsal coalition was performed leading to alleviation of symptoms. The purpose of this report is to add to the body of literature on this rare type of coalition as well as detail the challenges and management.