"We'll know more when the swelling has gone down. Probably out for the season and it looks like a knee injury", writes AIK coach Roger Melin in a text message to Aftonbladet.
It was in the second period on Good Friday that Björk was forced to leave the ice at Hovet. He was taken to hospital for an examination, the newspaper writes.
Björk has scored two goals and five assists in 15 playoff matches. In the regular season, he got 28 points and a fifth place in AIK's internal scoring league.
Djurgården leads the Hockey Allsvenskan final with 2–0 in best of seven matches. The next match is played on Easter Sunday.
