Lallo, M.A; Bondan; E.F.; Xavier, J.G; Fernandes, T.P.; Kolber, M.; Zanco, N.A.
Malformations of the extremities or parts of them are varied in their manifestations, ranging from absence of a single structure to partial or complete absence of the limbs. They may occur as localized primary malformations or generalized and secondary defects, usually in association with developmental disturbances of other systems. A 2-month-old female puppy of no defined breed was brought to the Veterinary Hospital of the Methodist University of São Paulo presenting bilateral hemimelia of the forelimbs. No other family members were known to present similar alterations and apparently this puppy had no disability for suckling. Physical and radiographic examination at 2 and 9 months of age revealed rudimentary humeri, shortened ulnas (hypoplastic), bilateral absence of the radii, reduced number of carpal and metacarpal bones and hypodactyly (with the presence of 1 digit in the left limb and 2 in the right limb). It was not possible to identify any teratogenic agent that could induce this malformation. No other deformity was noticed by physical and radiographic examination, probably being a localized primary congenital defect. The animal sometimes walked in bipedal position, as much as used the jaw to support its locomotion. It is now being developed an appropriate orthopedic car for walking assistance.