Va. Schultz et Ag. Watson, LUMBOSACRAL TRANSITIONAL VERTEBRA AND THORACIC LIMB MALFORMATIONS IN A CHIHUAHUA PUPPY, The Journal of the American Animal Hospital Association, 31(2), 1995, pp. 101-106
A three-month-old, male Chihuahua puppy with congenital absence of the
distal 40% of the right thoracic limb was examined. The limb ended as
a short, rounded, skin-covered stump. Radiography revealed a 40% shor
tened humerus tapered to a blunt end without its distal extremity Diss
ection of the left thoracic limb identified luxation of the elbow join
t and absence of the fourth digital pad. Alizarin-red staining and cle
aring demonstrated syndactylous fourth and fifth digits in the left th
oracic limb and an anomalous eighth lumbar vertebra. This additional v
ertebra was unilaterally sacralized and constituted a lumbosacral tran
sitional vertebra.