The Dallas Cowboys are back in the playoffs, but they are not exactly going in with a clean bill of health. As a matter of fact, more than half of their offensive line is dealing with injuries.

According to Charean Williams of Pro Football Talk, right guard Zack Martin and left tackle Tyron Smith were both limited participants in practice on Wednesday, and left guard Xavier Su'a-Filo did not practice at all.

Martin is dealing with a knee injury that kept him out of the Cowboys' season finale against the New York Giants last Sunday, while Smith is nursing a neck issue that has plagued him for much of the year and kept him sidelined against the Giants.

Meanwhile, Su'a-Filo has an ankle injury and has not practiced yet this week.

For a Cowboys team that relies heavily on Ezekiel Elliott and the running game, this is pretty concerning.

Both Martin and Smith have been among the best offensive linemen in the league since they entered the NFL, with Martin making the Pro Bowl in each of his five seasons and Smith earning trips to Honolulu six straight years. The two have also earned a pair of First-Team All-Pro selections each.

Su'a-Filo just joined Dallas this September and has been a revelation for the Cowboys, starting eight games and holding his own.

Dallas won 10 games to capture the NFC East division crown this season, marking the second time in three years that the Cowboys have won a division title.

They will take on the Seattle Seahawks in the Wild Card Round on Saturday night.