Boling suffered the injury on Sunday in a win over the San Diego Chargers. Initial rumors hinted at a serious injury, and Lewis confirmed those reports on Monday.
Boling becomes the ninth Bengal to be placed on the injured reserve list this season, though the previous eight have all been on the defensive side of the ball.
Josh Kirkendall of SB Nation's Bengals blog, Cincy Jungle, explains how the Bengals adjusted to Boling's absence on Sunday.
Anthony Collins, who had replaced Andre Smith as the starting right tackle (at least for this game), slid to left tackle while Andrew Whitworth moved inside to left guard. Smith came into the game and played his customary right tackle position.
It wouldn't be outside the realm of one's imagination to suggest that Cincinnati maintains this configuration for the rest of the year with Kevin Zeitler returning this week against the Indianapolis Colts.