It’s been revealed Sydney Swans co-captain Dane Rampe has been playing with a broken hand.

Rampe suffered a fracture to his hand in Sydney’s Round 8 match against Hawthorn and had a metal plate inserted to repair the break. He returned to play in Round 9 against St Kilda.

"He had the plate inserted in that hand and he was given the all-clear to play," Sydney coach John Longmire said on Tuesday.

"Last night he had a scan and we found out that the plate has been dislodged again, so he'll be out for the rest of the season. It's obviously very important that he gets that right now, so it's really unfortunate.

"I think it's our ninth player ruled out for the season, so it's unfortunate. He's obviously one of our most important players and he's our co-captain, so it's disappointing for him.

"In the end, he's too important to us for him to keep playing and to put any sort of risk to that hand. We got to the point where once we found out the news on the scan, the decision gets made for us.

"We weren't going to take any more risks with Dane, he's just too important. As tough as what he is and even knowing that he'd like to play again this week, we just couldn't go ahead with that. We had to make sure we protect him."

After experiencing pain and swelling in his hand this week Rampe had precautionary scans, which have revealed his hand has rebroken and the previous repair has dislodged.

Rampe will be required to undergo further surgery.

It’s unlikely he will return to play this season.