Location

Foot

Diagnosis

Calcaneonavicular coalition

Discussion

Plain film and CT images of calcaneonavicular coalition. Notice the elongated, tubular like extension of the anterior calcaneus seen on the lateral film; this imagery has been likened to the elongated nose of an anteater. There is abnormal bony fusion of the calcaneus and navicular bones, with the presence of a bony bar extending between these two bones.

Reference

Oestreich AE, Mize WA, Crawford AH, Morgan RC Jr.: The “anteater nose”: a direct sign of calcaneonavicular coalition on the lateral radiograph. J Pediatr Orthop 1987 Nov-Dec;7(6):709-1.

Figures

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