The interruption, which comes just at the point when the housekeeper recognizes the scar—that is, at the moment of crisis—describes the origin of the scar, a hunting accident which occurred in Odysseus' boyhood
Auerbach identifies Euryclea's act of recognition as the precise narrative fulcrum around which Homer inserts the extended scar-origin digression, making her touch the trigger for a demonstration of Homeric temporal externalization.
, Mimesis: The Representation of Reality in Western Literature, 1953thesis