ST. LOUIS - St. Louis Blues President of Hockey Operations and General Manager Doug Armstrong announced tonight that defenseman Carl Gunnarsson will miss the remainder of the season after suffering an ACL tear in his left knee during the first period of the Blues' 4-1 win over the Vancouver Canucks.

After leaving the ice, Gunnarsson was evaluated by Dr. Matt Matava and Dr. Matt Smith before being taken to Barnes West County Hospital where an MRI revealed the tear.

He will undergo surgery once the swelling in his knee subsides and will be re-evaluated in six months.

Gunnarsson, 31, has dressed in 63 games for the Blues this season, posting nine points (five goals, four assists) and 22 penalty minutes. The 6-foot-2, 198-pound defenseman is currently in his fourth season with the Blues after the club acquired him via trade from the Toronto Maple Leafs on June 28, 2014.

Overall, the Orebro, Sweden, native has appeared in 556 career NHL regular season games, amassing 122 points (25 goals, 97 assists) and 151 penalty minutes.