IT'S A triple blow for Brisbane on the injury front with Marcus Adams, Cam Ellis-Yolmen and Connor McFadyen set to spend time on the sidelines.

Luckless defender Adams had a foot operation after round one, but scans showed this week that he's suffered a stress reaction and could be out for a further two months.

ROUNDS 6-7 Check out the full fixture

"We did a bit of investigation and that's going to take a little bit longer than we thought, so he might be another six to eight weeks just to let that settle," Brisbane's high performance manager Damien Austin said of Adams.

In a cruel blow just a week after performing strongly against Adelaide's Matt Crouch in a scratch match, McFadyen will undergo a knee reconstruction.

"They played a bit of match practice and Connor did his ACL so that's really disappointing for him," Austin said.

"He's been really positive and will have an operation this week."

Midfielder Ellis-Yolmen will not head to New South Wales for the next two games after injuring his calf in the first half against Port Adelaide in round five.

"He's got a strain, it is only minor so that will probably keep him out for the next one to two weeks," Austin said.

THE LADDER Where is your team sitting?

The news is better for skipper Dayne Zorko, who should return from a calf injury.

"He's ticked everything off and we'll probably put him in," Austin said of the captain.

However, Zorko is still carrying some soreness around his Achilles.