"The extent of the damage is such that he will take no further part in the current championship," the SRU said in a statement.
"Laidlaw will see a specialist later in the week to determine the best course of management and estimated time out of the sport."
Scotland, who beat Ireland 27-22 in their first game, face Wales at Murrayfield in the third round on Feb. 25.
News that makes sense
Your trusted source for staying up-to-date with the world around you. Get free daily news updates and analysis, straight to your inbox.
(Reporting by Simon Jennings in Bengaluru, editing by Lary King)
