Brisbane have confirmed Brent Staker will miss the rest of the AFL season, after skipper Jonathan Brown underwent surgery for facial fractures.

In a massive double-dose of bad news, forward linchpin Brown will be sidelined for at least eight weeks, while scans confirmed the need for utility Staker to have a full knee reconstruction on Tuesday.

"It's obviously devastating news for Brent," Lions football manager Dean Warren said.

Brown had surgery on Monday and was to spend another day or two in hospital.

West Coast were dealt a double blow of their own, with Mark LeCras (torn adductor) ruled out for the next 7-10 weeks and midfielder Chris Masten (knee) expected to miss six weeks.

LeCras won't require surgery but his injury is a massive blow to West Coast's hopes of making an impact this year after last season's wooden spoon campaign.

The 24-year-old was the only Eagle to earn All-Australian honours last season after booting 63 goals in a sparkling campaign.

Adelaide's concerns have also mounted, with scans revealing 21-year-old livewire Rory Sloane broke his jaw in Saturday night's win over Hawthorn.

He was already expected to be sidelined for four weeks with a thumb fracture.

The Crows were still to learn whether star forward Jason Porplyzia will undergo season-threatening surgery, after dislocating his shoulder in the same match.

But they hope to have big forward Kurt Tippett back from an ankle injury for the round three clash with Fremantle, after their round two bye.

West Coast were still awaiting scan results for their star forward Mark LeCras on Monday, after he injured his groin kicking for goal in their win over North Melbourne on Sunday night.

Port Adelaide forward Jay Schulz will be out for six to eight weeks with a knee medial ligament strain.

And Geelong gun midfielder Joel Selwood is in doubt for the Cats' clash with Fremantle on Saturday night, after being knocked out against St Kilda in the opening round.

But the Cats should regain experienced pair Cameron Ling and Paul Chapman, after they showed their fitness with strong VFL games on the weekend.

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