In this series of 19 resected calcaneonavicular bars for peroneal spastic flatfoot (mean follow-up 3.4 years), we demonstrate that interposition of extensor digitorum brevis led to asymptomatic mobile feet without evidence of recurrence of the bar in 90% of the patients; this compares well with 43% recurrence rates of bars with associated pain and stiffness when extensor digitorum brevis is not interposed. We therefore recommend this method for prevention of the bar and their symptoms.
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