Nicklas Grossmann to miss Game 5
Grossman suffered the injury in the second period of a 10-3 loss in Game 4 on Wednesday and could be out indefinitely.
He did not travel with the team to Pittsburgh.
The Penguins will be without defenseman Paul Martin, who will miss his second straight game with an undisclosed injury.
Copyright 2012 by The Associated Press
MORE NHL HEADLINES
- Source: Brodeur retires, to join Blues' brass
- Struggling Richards clears waivers for Kings
- Phaneuf 'week to week' for struggling Leafs
- Flyers' Rinaldo suspended 8 games for boarding