Andrus Peat

New Orleans Saints offensive guard Andrus Peat (75) plays during the first half of an NFL football game against the Buffalo Bills Sunday, Nov. 12, 2017, in Orchard Park, N.Y. (AP Photo/Jeffrey T. Barnes) ORG XMIT: NYFF1

New Orleans left guard Andrus Peat was carted off the field during the second quarter of the Saints' wild card playoff game against Carolina.

Peat broke his fibula, a source told The Advocate, and will have an MRI to determine if there was any ligament damage.  

Peat, who played 88.5 percent of the snaps during the regular season while shifting back and forth from left guard to left tackle and back again, went down in traffic on a running play. 

Trainers immediately immobilized Peat's left leg, and he was carted off to cheers from the Superdome crowd. 

With Peat out, the Saints offensive line will have to rely on the depth that has carried it all year. Backup Senio Kelemete, who entered the game at left guard, is basically a starter, having played 634 snaps on the offense this season, but the loss of Peat leaves New Orleans thin up front. 

Left tackle Terron Armstead has been in and out of the lineup all season long, and he just returned to the starting lineup after missing the season finale against Tampa Bay with a thigh injury. When Armstead has been unavailable, Peat has often kicked out to left tackle to replace him, and now the Saints need Armstead to be healthier than ever. 

Follow Joel A. Erickson on Twitter, @JoelAErickson.