VOORHEES, N.J. - Flyers defenceman Derian Hatcher will undergo surgery to repair cartilage damage in his right knee and will miss two to four weeks.
The 35-year-old Hatcher, who had his streak of 107 consecutive games recently snapped because the knee was bothering him, said he aggravated the injury lifting weights.
"I've had problems with it the past 10 years probably," Hatcher said after the Flyers practised on Wednesday. "It's probably closer to four weeks (recovery) because it's had trauma before. The tough thing about getting injured is it sets you back. Instead of being where you're at, you're almost starting over."
The Flyers called up Nate Guenin from the AHL's Philadelphia Phantoms to fill Hatcher's roster spot. Guenin played nine games with the Flyers last year.
The Atlantic Division-leading Flyers (7-3) are also without forward Simon Gagne and suspended defenceman Randy Jones.
Gagne is battling vision problems and dizziness from a hard hit suffered last week.
"He was better, but still not at the baseline that he needs to be at," Flyers general manager Paul Holmgren said.
Holmgren said he hoped Gagne, who has four goals and eight points this season, would return next week.
Scott Hartnell has been moved up to take Gagne's spot on the Flyers' top line with Daniel Briere and Mike Knuble.