There was no further update on his condition.
Ranger suffered the injury with 4.1 seconds remaining in the first period Wednesday when Tampa Bay Lightning forward Alex Killorn levelled the Leafs defenceman into the boards.
Ranger was taken off the ice on a stretcher and to a local hospital where he was “stable, conscious and alert."
Killorn was given a five-minute major penalty and a game misconduct that the Leafs were not able to score on.
It was expected that the NHL's department of player safety would take a look at the play, though that is standard procedure, especially when that kind of punishment is handed out on the ice.
The Leafs would go on to lose 5-3 to the Lightning at Air Canada Centre.
Players are off Thursday and return to practice Friday before the Leafs' important game at home against the Montreal Canadiens (CBC, CBCSports.ca, 7 p.m. ET).