In adulthood, Stalin measured tall. To appear taller, he wore stacked shoes, and stood on a small platform during parades. His mustached face was pock-marked from smallpox during childhood; this was airbrushed from published photographs. He was born with a webbed left foot, and his left arm had been permanently injured in childhood which left it shorter than his right and lacking in flexibility, which was probably the result of being hit, at the age of 12, by a horse-drawn carriage.