the Great (Sapor II.). Surnamed Zu-lectaf (shoulder-breaker), because he dislocated the shoulders of all the Arabs taken in war. The Romans called him Posthumus, because he was born after the death of his father Hormuz II. He was crowned in the womb by the Magi placing the royal insignia on the body of his mother.
Source: Dictionary of Phrase and Fable, E. Cobham Brewer, 1894