Polymelia with two extra forelimbs at the right scapular region in a male Korean native calf.

In a male Korean native calf 14 days of age, polymelia (notomelia) was observed macroscopically and radiographically. External features included two normal forelimbs, two normal hindlimbs and two undeveloped extra forelimbs. The extra forelimbs were attached to the caudal regions of the right scapula and devoid of muscular tissues. In the extra forelimbs, a scapula-like bone formed a joint with the incompletely duplicated humerus. The humerus fused with the incompletely duplicated radius. The ulna, carpal bones, metacarpal bones and phalanges were completely duplicated. But one set of the duplicated carpal bones consisted of five bones: radial, accessory, fourth carpal, fused second and third carpal, and fused ulnar and intermediate carpal bones. The hoof and the rudimentary hoof of accessory digit were duplicated.