The National Hockey League has rules that limit teams to four non-emergency call-ups after the trade deadline and an unlimited number of emergency call-ups.
What is an emergency call-up?
Emergency conditions shall be established when the playing strength of the Loaning Club, by reason of incapacitating injury or illness or by League suspension to its Players is reduced below the levels of two (2) goaltenders, six (6) defensemen and twelve (12) forwards. Proof of the existence of the emergency conditions including the incapacity shall be furnished to the Commissioner of the League upon request made by him.
—Article 13.12(m)(ii) of the Collective Bargaining Agreement
Note that no where does it say that a player must be on injured reserve; as long as a player is injured, an emergency call-up can be made.
So how many non-emergency call-ups and how many emergency call-ups have been made?
Since the trade deadline of February 28, the Vancouver Canucks have exercised five call-ups.
Shortly after the trade deadline, the Canucks assigned defenseman Christopher Tanev to the Manitoba Moose and then immediately recalled him. This was done so Tanev could be eligible to join the Moose for the American Hockey League playoffs. Head coach Alain Vigneault has confirmed the Canucks used a call-up on Tanev.
Victor Oreskovich was recalled on March 7 and re-assigned on March 9; according to the Winnipeg Free Press, it was an emergency recall.
Yann Sauve was recalled on March 15 and re-assigned on March 16. When speaking with the media, Alain Vigneault mentioned that Sauve had to go back down right away because he was on emergency.
Victor Oreskovich was recalled a second time on March 17 and re-assigned on March 19. TSN reported on Saturday that Oreskovich had been up with the team on an emergency recall.
Alas, the answer is the Canucks have three remaining call-ups after using one to recall Chris Tanev.
The Canucks have the option to make another emergency recall if Daniel Sedin is unable to go Wednesday night against the Detroit Red Wings. He is currently not on the trip as he is awaiting the birth of his third child in Vancouver.
Kudos to Opmac of the Canucks.com Message Boards.