The longitudinal epiphyseal bracket (LEB) or delta bone is a rare congenital ossification anomaly generally observed in finger or toe phalanges but occasionally in the metatarsus or metacarpus. LEB is initially composed of cartilage forming a bracket linking the proximal and distal epiphyses and causing defective growth of the primary ossification focus. Changes in bone growth secondary to the presence of a LEB would be the cause the angle malformations and length discrepancies observed in these subjects. This raises significant therapeutic problems and repeated surgical interventions when the diagnosis is not established early enough. The clinical presentation of LEB of the first metatarsus is similar to metatarsus adductus or hallux varus primus. The particular aspect on the plain x-ray enables the diagnosis.