Jordan Hicks was released from the hospital on Tuesday and is in "good spirits," Vikings defensive coordinator Brian Flores said.
The linebacker and defensive captain underwent emergency surgery on his lower right leg to relieve pressure from compartment syndrome on Sunday.
On Tuesday morning, Hicks called surgery a "huge success" on social media. He posted a photo from a hospital bed with his right leg elevated and wrapped. Hicks suffered a shin bruise while tackling Saints running back Alvin Kamara during the first quarter of Sunday's win. He was transported to a local hospital afterward when swelling continued.
"Thank you to everyone who has reached out to me the past few days and for all your continued prayers," Hicks wrote. "The surgery was a huge success and I'm grateful for all of the doctors, nurses and medical staff who treated me. Looking forward to getting back out there with the guys soon!"
The Vikings placed Hicks on injured reserve on Tuesday afternoon, meaning he'll miss at least four games.
Flores said he'll lean on linebacker Ivan Pace Jr., among others, to replace Hicks. Linebackers Brian Asamoah II and Troy Dye are next on the depth chart.
"It's a big loss," Flores said.
The Vikings officially announced the re-signing of linebacker Anthony Barr to the practice squad on Tuesday. He'll provide depth with the chance to earn a role, Flores said.