Bergeron was hurt in Game 4 of the Eastern Conference semifinals against Philadelphia May 6 and missed Game 1 of the conference finals Saturday, which the Bruins lost 5-2 at home.
Game 2 will be Tuesday night in Boston.
"There's a protocol we're going through, a process he has to go through," Bruins Coach Claude Julien said. "We've seen him skate now for a few days but there's nothing else to report in regards to him."
Bergeron leads Boston with 12 points in 11 playoff games (two goals and 10 assists). He was third on the team during the regular season with 57 points in 80 games.