The Montreal Canadiens have been making due without Andrei Markov and Josh Gorges on their back end due to injury for some time.

They’ve also been missing Jaroslav Spacek since Feb. 12, which makes it more amazing they start tonight’s action just six points back of the Bruins for the Northeast Division lead (the Bruins also hold a game in hand).

While Markov and Gorges are both done for the year, Spacek could be back in the Habs’ lineup even before the regular season ends.

According to the Habs Inside/Out blog, Spacek learned today he needs arthroscopic surgery to “clean out his right knee” but should be back in four to six weeks.In 57 games this season, Spacek has posted 1-15-16 totals and a plus-8 rating.

Montreal, which added Paul Mara and Brent Sopel to its back end prior to Monday’s trade deadline, needed some positive news because the ninth-place Buffalo Sabres are only eight points behind the sixth-place Habs in the Eastern Conference race.

Boston and Montreal meet again a week from today in the first match-up since the Bruins’ wild 8-6 win Feb. 9. In that fight-filled game, Bruins defenseman Johnny Boychuk famously pummeled Spacek in a late-game brawl.