Aaron Mullett injures the fourth metacarpal in his right hand while spoiling Gold Coast forward Tom Lynch in the second quarter of North Melbourne's 13-point win over the Suns.
He played out the rest of the game and won 24 disposals and seven rebound-50s from 87 per cent game time.
He will undergo surgery with the Roos hopeful he will only miss one game.
"Aaron met with a specialist (on Monday) morning and will have surgery to insert a small plate in his hand later (on Monday) afternoon," North doctor Peter Baquie said.
"After the procedure, it will simply be a matter of allowing the wound enough time to heal before he can return. We anticipate that will only be one to two weeks at the most."