The 22-year-old defenseman was injured during Boston's 7-3 win against the Washington Capitals on Dec. 23. He did not play in victories against the Buffalo Sabres on Friday and Sunday.
McAvoy has 13 points, all assists, and a plus-13 rating in 38 games this season. He leads the Bruins in average ice time at 23:10 per game.
The Bruins recalled defenseman Jeremy Lauzon from Providence of the American Hockey League on an emergency basis. Lauzon has spent all of this season with Providence; he had one point, a goal, in 16 games with Boston last season.
"Really excited. I think since the beginning of the year my game has been strong," Lauzon said. "I feel really good."
Forward David Krejci will not travel with the Bruins for their next game against the New Jersey Devils at Prudential Center on Tuesday (1 p.m. ET; SN, TVAS, MSG, NESN, NHL.TV). Krejci, who has 28 points (eight goals, 20 assists) in 34 games, has a lower-body injury, but could play Thursday at home against the Columbus Blue Jackets, according to coach Bruce Cassidy.
Defenseman Torey Krug, who has missed the past two games with an upper-body injury, practiced Monday but likely won't play against the Devils.
"Krug skated. I don't believe he'll travel either with the team," Cassidy said. "I think he's one more day. We'll confirm that with the medical staff."
Krug leads Bruins defensemen with 26 points (five goals, 21 assists) in 33 games.
"I feel good," Krug said. "Obviously any time you get back on the ice with your teammates and back into a full practice, full-contact everything, you feel excited. It gets you pumped up about the next possibility to come."
