Flyers rookie defenseman Erik Gustafsson, who was plus-6 in his last game, underwent wrist surgery Thursday morning and will be sidelined for six weeks, GM Paul Holmgren said.
The surgery was performed by Randy Culp at Methodist Hospital.
With Gustafsson sidelined, Andreas Lilja will remain as the Flyers' sixth defenseman.
Originally, the Flyers had said the injury was not serious and that he was day to day.
The Flyers host Phoenix Thursday night.
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