Scotland will be without captain Greig Laidlaw for the remainder of the Six Nations due to an ankle injury.
Laidlaw was forced off in the 24th minute of Scotland's bruising 22-16 defeat to France in Paris on Sunday and left the stadium wearing a protective boot.
The 31-year-old's return to Gloucester was confirmed on Monday and further examination has confirmed ligament damage to the right ankle.
Laidlaw will consequently miss Scotland's remaining fixtures against Wales, England and Italy.
Scottish Rugby confirmed Laidlaw will see a specialist this week to "determine the best course of management and estimated time out of the sport".
While there is no timeframe on the scrum-half's recovery, it raises questions over his fitness for the British and Irish Lions tour to New Zealand in June.
Gloucester sit ninth in the Premiership and the club will be hopeful Laidlaw returns in time to aid their push for a top-six finish before moving to Clermont Auvergne next season.