FOXBOROUGH, Mass. -- New England Patriots starting left tackle Nate Solder was on the practice field to start Thursday's practice after sitting out Wednesday's session with a concussion.

Wide receiver Aaron Dobson was again not spotted at the start of practice for the second straight day, the team's lone absence. Dobson has been out since suffering a Week 12 foot injury.

It's a good sign for Solder, although if he is not able to play this Sunday, the team may be forced to move veteran Will Svitek into his place on the left side of the line. Svitek has been starting in place of Marcus Cannon at right tackle of late, though Cannon has practiced both days this week (ankle).

If Cannon is unable to play again this Sunday, the team may promote one of their practice squad offensive linemen to the active roster for insurance purposes.

Linebacker Brandon Spikes, who has been dealing with a knee injury, rode the stationary bike during individual position group drills.

The Patriots once again took to their indoor facility for practice as they prepare for heat and humidity down in Miami this Sunday.

The team practiced in helmets and shells.