Sturm injured in opening minutes
The Bruins announced later in the period that Sturm would not be returning to the game, the first in their Eastern Conference semifinal series.
Sturm went to the ice in the Flyers' zone in the opening minute and remained there while play continued at the other end. At the whistle, a Bruins trainer came on and Sturm eventually got to his feet. He skated off, but favored his right leg.
Sturm scored the game-winner in overtime of the Winter Classic against the Flyers at Fenway Park.
Copyright 2010 by The Associated Press