Scotland fly-half Phil Godman is set to miss the 2011 RBS Six Nations after damaging his knee ligaments in training.
The 28-year-old Edinburgh ace is facing six months out after tearing his anterior cruciate ligament on Tuesday.
And following a scan on the injury, the Scotland and Edinburgh medical teams have confirmed Godman now faces a lengthy spell on the sidelines.
Scotland team doctor James Robson said: "Phil sustained the injury in non-contact training yesterday.
"His rehabilitation starts now.
"He will have to undergo surgery in due course to repair the knee ligaments but the Edinburgh and Scotland medical teams will be working to deliver him ready to be considered for selection for the Rugby World Cup squad next year."
Godman has now set his sights on returning to full fitness in time for the Rugby World Cup.
Godman said: "I have to focus on my rehabilitation and target being available to go to the World Cup, which is a massive ambition for me."