Forsberg, who usually skates with the NHL's Colorado Avalanche, left in the third period of MoDo's 3-2 overtime loss to Linkoping after colliding with Johan Franzen.
Team doctors said Forsberg dislocated his left wrist and X-rays showed a fracture in one of the bones in his hand.
He underwent immediate surgery and visited a hand specialist on Friday for more tests.
Peter Forsberg, shown here earlier this season, will miss at least six weeks with a hand injury. (CP File Photo)
"It will take at least six to eight weeks to heal," MoDo doctor Kim Thorsen said, adding the injury wasn't career-threatening.
Forsberg could return to play if MoDo advances to the semifinals of the playoffs.
The injury marred the festive atmosphere of a game in which Vancouver Canucks captain Markus Naslund returned to MoDo to play during the current NHL lockout.
Naslund received a standing ovation from the crowd but didn't score in his first game back in his native Sweden.
"It was wonderful to be back and play, but [Forsberg's injury] dampens it a bit," Naslund said.
The Canucks star grew up with Forsberg in the small Swedish town of Ornskoldsvik and have skated together many times in international play.
Thirteen current and former NHL players are currently with MoDo during the NHL lockout.
with files from CP Online
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