PITTSBURGH -- Pittsburgh Penguins center Robert Lang broke his left hand again Saturday against Philadelphia and will miss the rest of the season.

Lang returned Saturday after sitting out seven games with the injury, only to break his hand again late in the second period.

Three of the Penguins' top five scorers from a year ago -- Lang, Martin Straka and Mario Lemieux -- are out for the rest of the season with injuries. The team also traded 2001 NHL scoring champion Jaromir Jagr.

Straka came back late last month after being out four months with a broken leg but, just as Lang did, broke the bone again after returning. He also broke a bone above an eye in his first game back.

"It seems like every time we get somebody back, they reinjure themselves," coach Rick Kehoe said. "I haven't see anything like it."

The Penguins, who trail four teams for the final Eastern Conference playoff spot, are in danger of missing the playoffs for the first time since 1990.