GREEN BAY, Wis. -- Now we know why Jordy Nelson was not on the field for the last drive of Sunday's comeback win in Dallas.

Nelson had a back injury.

He showed up on Wednesday's injury report. But it didn't keep the Green Bay Packers receiver off the practice field, and he doesn't think it will be an issue Sunday at Minnesota.

Nelson did everything during the portion of practice that was open the media and was listed as a full participant on the post-practice report.

"I went through everything like normal [and] feel good," Nelson said. "It's nothing serious. Everything is good. Like I said, practicing all week and playing on Sunday."

The NFL's leader in touchdown catches (six) did not play after he landed awkwardly after failing to come down with a two-point conversion pass in the fourth quarter against the Cowboys. Nelson appeared to wince after he landed. He stood on the sideline with his helmet on during the last drive but never got back in the game.

Running back Ty Montgomery also was listed as a full participant in Wednesday's practice -- the first time he's had designation since he broke multiple ribs in Week 4 against the Bears. However, the Packers' only full-pads practice of the week comes on Thursday. If Montgomery makes it through that as a full participant, then perhaps he has a legitimate chance to return against the Vikings.

However, after the way rookie Aaron Jones played against the Cowboys (19 carries for 125 yards and a touchdown), coach Mike McCarthy might have to think about going with Jones as his No. 1 running back regardless of Montgomery's status.

"I'm not sure really what Ty's availability is going to be No. 1," McCarthy said before Wednesday's practice. "No. 2 we got to get Aaron ready. We've got to get Jamaal [Williams] ready."

The only players who did not practice Wednesday all were on defense: outside linebacker Ahmad Brooks (back), safety Morgan Burnett (hamstring), cornerback Kevin King (concussion) and inside linebacker Joe Thomas (ankle).

Right tackle Bryan Bulaga was limited after he made his return to the lineup against the Cowboys. So was left tackle David Bakhtiari, who has not played since the regular-season opener because of a hamstring injury.

The full injury report can be found here.