"Scratch defenceman Cam Barker from the Edmonton Oilers' lineup for at least three months.

Head coach Tom Renney said on Thursday that Barker will undergo ankle surgery in the next day or two. The details of the injury weren't revealed. Nor is it clear how he was hurt.

Barker last played in the Nov. 10 game against the Boston Bruins.

"We're still trying to find out exactly when he did it. He doesn't even know," said Renney. "He thought there was something wrong with his skate.""