Lundestrom sustained an apparent lower-body injury during Thursday's practice session, Patrick Present of The Hockey News reports.
Lundestrom needed assistance getting off the ice and to the dressing room after sustaining his injury, and the severity of the issue isn't yet known. He'll have a few days to recover before the Ducks face the Sharks on Saturday, but Ross Johnston could see a role for Anaheim if Lundestrom is unavailable.