The team signed guard Phillip Keith Manley to the active roster.
Reynolds started six games this season before missing the past two games. Rookie Peter Konz moved up as the starter as the Falcons (8-0) remained the NFL's only unbeaten team.
Reynolds has played in 28 games with 14 starts in four seasons with the Falcons.
Manley was signed by Atlanta as an undrafted rookie out of Toledo in April. He later was signed to the Falcons' practice squad.
Atlanta plays at New Orleans on Sunday.