Elbow taken as six handbreadths; three to the elbow and three from the elbow to the shoulder. Another measure was the "cubit" (from "cubital"). This was taken to be the length of a man's arm from the elbow to the end of the middle finger. Though the elbow is similarly adapted for stability through a wide range of pronation-supination and flexion-extension in all apes, there are some minor differences. In arboreal apes such as orangutans, the large forearm muscles originating on the epicondyles of the humerus generate significant transverse forces on the elbow joint. The structure to resist these forces is
The finger Greek word "dactylos", both "finger" and the rhythmic measure composed of a long syllable and two short, like the joints of a finger ( which also appears as a visual pun on the penis and testicles in a medieval Latin text). Socrates called one who made the gesture "boorish and stupid". The gesture recurs as a form of mockery in "Peace", alongside farting in someone's face; the usage is later explained in the "Suda" and included in the "Adagia" of Erasmus. The verb "to play the Siphnian" appears in a fragment of Aristophanes and has a similar meaning; the usage