Penguins star Sidney Crosby will be out at least 6 weeks after what the team said was a successful core muscle injury repair work Thursday.

Basic manager Jim Rutherford says the treatment was performed by Dr. William Meyers in Philadelphia.

The 32-year-old Crosby leads the team in scoring with five goals and 12 helps in 17 games despite dealing with a sports hernia given that training school.

The two-time MVP left a 3-2 shootout win over Chicago on Nov. 9 in the third period. He got tangled up with Blackhawks defenceman Erik Gustafsson and moments later took a shot from Gustafsson that smacked off his right foot.