Larsson was sidelined for two months with a persistent knee injury.
Larsson has had persistent knee problems which has made him unavailable for selection for three months.
He told the Chronicle: “It was one of those ligament injuries which didn’t look as bad straight away. But once I went to see different people, we realised that it was a bit worse than we were hoping for.
“Of course you always hope to be back a bit quicker, but it wasn’t to be.
“It was my first real injury of my career, so it’s not nice sitting on the side watching the team.
“But I suppose I’ve had a winter break for the first time ever! Hopefully I’ll be refreshed and energised for the run-in."
Larsson is hoping that it won't be an injury that will bother him again, and he made his return to first team action as a substitute in the 1-1 draw with Southampton at St Mary's on Saturday. Despite the late equaliser from the Saints, Sunderland managed to move a point clear of the drop zone.
His set-piece delivery, experience and balance he offers to the side is something that has been missed at times, though Sunderland seem to have tried to take some of that responsibility off Larsson in the January transfer window.
Larsson referred to his time out, though it may have been tongue in cheek, as a winter break. Having a player returning to the side refreshed could give the side some fresh impetus going into a crucial stage of the season.