TARSAL ANOMALIES AND PERONEAL SPASTIC FLATFOOT

Abstract
Recent literature on the etiology of peroneal spastic flatfoot, especially by Harris and Beath,1 has stressed the role of congenital abnormalities in this condition. Sloman2 in 1921, and later Badgley,3 observed the association of fusion of the anterior process of the calcaneus to the navicular bone with this condition, though anatomically the anomaly had been described earlier.4 A second type of tarsal anomaly, namely, a union between the talus and the calcaneus in the region of the sustentaculum, has been held by Harris and Beath to be a commoner and heretofore unrecognized cause of rigid flatfoot. These authors reported a group of 17 cases of peroneal spastic flatfoot in which 88% were the result of tarsal anomalies. Twelve consisted of a talocalcaneal bridge in the region of the posterior end of the sustentaculum tali, and three were calcaneonavicular bars. Since the above report was published, we

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