After Boston (20-16-4) plays Edmonton the Bruins start a four-game road trip at the Florida Panthers on Saturday.
Backes took part in a full practice, including contact drills. He said he'll wait and see how he feels overnight before deciding whether to play Thursday.
"We're kind of in a take this day-by-day, hour-by-hour type of scenario," Backes said. "I think we were able to take another step forward today being in a full practice. We'll see what tonight brings, [Thursday] brings and hopefully progress to playing in an NHL hockey game in the very near future."
The Bruins are eager to get the 32-year-old back in their lineup.
"It's big for this team, on and off the ice," forward Brad Marchand said. "He's huge in this room, a great leader. He brings so many different elements to the game on the ice and on the bench. If he's in [Thursday] then it'll be a huge lift for our team."
The Bruins have won twice in their past five games (2-2-1). They're also awaiting the return of defenseman John-Michael Liles (concussion) and forward Matt Beleskey (knee). Liles, who was injured Nov. 27, has been skating with the Bruins but isn't medically cleared for game action. Beleskey, who was injured Dec. 3, has started skating, Julien said. He was expected to miss six weeks.