NEWARK, N.J. -- New Jersey Devils defenseman Henrik Tallinder has been diagnosed with a blood clot in his lower left leg -- known medically as "acute thrombophlebitis" -- and will be out six to eight weeks, general manager Lou Lamoriello announced Thursday night.
The Devils do not know how the injury occurred. An MRI taken Thursday afternoon revealed the clot.
"I don't think anyone expected it was as serious as it turned out to be [Thursday]," said coach Peter DeBoer, who thought Tallinder would be able to play on Thursday morning, after his team's 4-1 loss to the Boston Bruins.
"It's unfortunate. That's a big loss for us," goaltender Martin Brodeur said. "He's a guy that plays a lot of minutes and he's a big body in front of me. It's kind of a freak thing. It's scary."
Tallinder had missed six games earlier in the season with back spasms.
In 39 games, the 33-year-old defenseman has recorded six assists and is a minus-11.
Matt Taormina dressed in place of Tallinder on Thursday night.
Veteran defenseman Andy Greene (fractured foot/toe) skated for the first time Wednesday and also on Thursday. Greene hasn't played since Dec. 6, and Lamoriello told reporters that he isn't expected back until sometime after the All-Star break.
Tallinder is currently in the second season of a four-year, $13.5 million contract.
Mike Mazzeo is a regular contributor to ESPNNewYork.com.