Ekholm (undisclosed) will miss at least a week after getting injured versus the Hurricanes on Thursday, Jason Gregor of Sports 1440 Edmonton reports.
Ekholm was hurt on a hit by William Carrier in the third period of Thursday's game. For now, Shakir Mukhamadullin will fill in on the third pairing while Jake Walman will pick up some top-four usage. However, the Oilers' defense has been a little shaky to start the season, so a roster move could still be in order.