Euan Murray's cut thumb could rule the Worcester prop out of the whole of Scotland's Six Nations Championship.
The experienced tighthead cut his thumb chopping wood at a club barbecue while he was still battling back from a leg problem picked up in November.
Scotland coach Scott Johnson admitted Murray's absence could prove significant to his side's chances.
"Euan, who knows what props do with their thumbs anyway, so we'll look at that," said the Scotland boss.
"We'd like him back and he is significant for us, but it just gives others opportunity. I can only assume that's the case.
"On a serious note we'll find out what the extent of the damage is. He had a long lay-off and was coming back from injury anyway, so we'll just have to see how he's coming along."
Scotland will keep on blooding new caps across the Six Nations, said Johnson.
"We'll always make sure they are equipped to do it physically: we don't want to go to a gunfight with a water pistol," he added.