This paper describes a case of an adult mongrel bitch with a deformity in the distal area of the left forelimb, which was based on duplicity of the accessory carpal bone, aplasia of the first carpal bone, nonexistence of the interosseus ligament between digits 3 and 4, bony alterations in digit 4 and presence of an incomplete supernumerary digit adjacent to digit 4. After analysis of defects it was concluded to be a hereditary congenital malformation named ectrodactyly, associated to the existence of a supernumerary digit.
ectrodactyly; dog; anatomy
