Bruins forward Nathan Horton is expected to miss the Stanley Cup playoffs because of a concussion.
The defending champions play Game 1 of their first-round series against the Washington Capitals on Thursday.
Horton suffered the injury Jan. 22 in a game against the Philadelphia Flyers and has not played since.
The 26-year-old Horton played in a career-low 46 games this season and had 17 goals and 15 assists this season. He had 26 goals and 27 assists last season.
During last year's Stanley Cup run, he had three game-winning goals, including the winners in the Game 7 victories over Montreal and Tampa Bay. But he missed the final four games of the championship series against Vancouver after suffering a concussion in Game 3.