Roman Polak sustained a small fracture in his sternum during the Stars' season opener against the Bruins and will be re-evaluated in one week, the team announced Friday.
The veteran defenseman was stretchered off the ice and transported to a local hospital midway through the second period of Thursday's 2-1 loss after crashing head-first into the corner boards while battling for possession with Boston's Chris Wagner.
The situation at American Airlines Center became tense as Polak laid motionless for several minutes as he was being tended to by the team's medical staff.
"The good news is that Roman has full use of his extremities," Stars head coach Jim Montgomery said after the game.
The Stars made several other roster moves Friday:
Forwards Blake Comeau (lower-body injury) and Jason Dickinson (upper-body injury) have been placed on injured reserve. In a corresponding move, Dallas recalled forwards Nick Caamano and Rhett Gardner from the AHL.
Corey Perry, who has been out since the start of training camp with a fractured foot, has been designated injured, non-roster.
Martin Hanzal, who is not expected to play this season because of a lingering back injury, was moved to long-term injured reserve.
This story was not subject to the approval of the National Hockey League or Dallas Stars Hockey Club.
Jeff Odom covers the Stars for DallasStars.com. Follow him on Twitter @jeffodom.