The injury to Bruins C Jason Allison's right wrist is much worse than originally believed, and the team said he would need tendon transplant surgery, either now or at the end of the season.

Boston newspapers reported that a test done Tuesday showed that a tendon in Allison's wrist is severely torn.

"The test confirmed that it's been much worse than it was originally diagnosed," Bruins President and GM Harry Sinden told the Boston Herald.

"I don't think we all realized how bad this injury was. This weekend, he couldn't even pick up a pencil. He's been playing with a lot of pain," said Sinden.

The procedure would involve removing the damaged tendon and replacing it with a tendon from elsewhere in his arm. If Allison were to have the surgery now, doctors said he would miss three to four months but might be able to return for the playoffs.

The other option would be for Allison to continue playing, despite the pain, and have the surgery after the season.

OILERS GET WHITMORE: The Oilers acquired G Kay Whitmore from the Bruins for D Mike Matteucci. Whitmore has spent the season at AHL Providence, posting a 6-6-1 record with a 2.86 GAA.