Flyers general manager Bob Clarke said an MRI confirmed the tear
and the team forwarded the results to a doctor in Tennessee to
determine if surgery is necessary.
"We won't know if surgery is necessary until [Wednesday]
afternoon," Clarke said. "If surgery is necessary, it will be
six to eight weeks before he is back playing."
The 26-year-old Niittymaki had a stellar rookie season with the
Flyers with a 23-15-6 record and 2.97 goals-against average.
The 23 victories tied for third among rookie goaltenders and
were the most by a Flyers netminder since Ron Hextall notched 37
victories during the 1986-87 season.
In two seasons with the Flyers, Niittymaki, a former member of
Finland's national team, has compiled a 26-15-6 record, 2.84
GAA and .899 save percentage in 49 regular-season games.
Niittymaki, who had surgery on his right hip following last season, was competing with Robert Esche to be the Flyers' No. 1 goalie in the new season that begins next week.
Information from SportsTicker and The Associated Press was used in this report.