Tarsal coalition is a congenital disturbance of hindfoot development. Talonavicular coalition is among the rarest forms of aberrant bony union of the tarsus. It frequently occurs bilaterally and in association with a number of skeletal deformities. Some patients are asymptomatic and the anomaly is discovered incidentally on plain radiographs. For others, a troublesome bony prominence will be the principle complaint and in a small proportion of patients marked foot and ankle pain with activity will prove debilitating. The authors describe the case of a 54-year-old male with bilateral foot pain spanning for nearly two decades. Symptom onset was insidious and at the time of presentation, he was limited to 10–15 min of mobilisation on flat ground.
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Competing interests None.
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