GREATER Western Sydney's endurance king Tom Scully will miss 12 weeks after undergoing surgery on his broken right ankle. 

GWS coach Leon Cameron is confident Toby Greene will return this weekend but Scully and small forward Zac Langdon (cracked hand) definitely won't play. Langdon, who has impressed in his first two games, is set to miss up to four weeks. 

Scully, who was troubled by knee soreness leading into the season, was injured last weekend against Collingwood.

He underwent surgery for a fracture and has also become the latest Giant to fall prey to a syndesmosis ankle injury.

Midfielders Ryan Griffen, Stephen Coniglio and Will Setterfield all missed substantial chunks of last season with the same injury. 

"Unfortunately, it's got us again," Cameron said on Tuesday.

"But Tom's ability to recover from surgery over probably the last six, seven years has been pretty good so, touch wood, we can get him back after the bye (in June)."

Cameron ruled out switching Lachie Whitfield back to the wing full-time to cover Scully, with the Giants' speedster impressing in his new role. 

"We're really pleased with how he's progressing in that half-back role and I can see that being 80 per cent of his role this weekend," Cameron said.

West Australian first-year Giant Langdon kicked three goals across his first two games and impressed with his pressure, but hurt his hand early in the clash with Collingwood.

GWS could get a small forward back this week, with Greene set to return after withdrawing from last week's game with a hamstring issue.