St Kilda co-captain Jarryn Geary is set to be sidelined for a period of time after dislocating his shoulder during Saturday’s clash with Sydney.

Geary came off the ground in the fourth quarter after attempting to tackle Swans forward Lance Franklin, and was subsequently taken to hospital after medical staff were unable to put his shoulder back in place.

Head of Football Program David Rath said Geary’s injury would be monitored over the coming weeks. 

“We’re working closely with the doctors and medical staff to determine what the next steps are for Jarryn’s recovery," Rath said.

Jarryn is obviously disappointed with this latest setback, but he's as tough as they come and an incredibly resilient leader.

- David Rath

“He's had a tough run with injury over the past few seasons, and we're hopeful to see him back on the field sooner rather than later.

“For now, Jarryn has chosen to remain with the group up in Sydney which is a testament to his selflessness and leadership.”

Geary will likely be joined by Mason Wood (hamstring) on the sidelines, while Max King will be assessed after playing out the game with a flared-up back injury.

Defenders James Frawley (shoulder) and Darragh Joyce (concussion) are also set to undergo tests as they return from their respective injuries.

Dan McKenzie is still one to two weeks away after suffering a calf injury earlier in the season, as are Shaun McKernan (toe) and Leo Connolly (shin), while Zak Jones (quad), Rowan Marshall (plantar fascia) and Dan Hannebery (calf) are still a few weeks away.