The Falcons placed Hellams (hamstring) on injured reserve Saturday, Terrin Waack of the Falcons' official site reports.
Hellams was unable to practice this week after suffering a hamstring injury in the Falcons' Week 13 loss to the Jets. The third-year pro played in 11 of 12 games for Atlanta, appearing almost exclusively on special teams. The 25-year-old will miss at least four games, with the final week of the regular season against the Saints being the earliest he can return.