There could be another reason to explain some of quarterback Andrew Luck's and the Indianapolis Colts' offensive troubles this season.
Luck, who missed two games earlier this season with a shoulder injury, also has been dealing with multiple fractured ribs, according to a media report.
Fox Sports reports that Luck suffered the rib injury in Week 3 against the Tennessee Titans, the same game in which Luck hurt his shoulder.
Luck subsequently sat out the following two games, wins over AFC South rivals Jacksonville and Houston. He was listed on the injury report in Week 6 before returning in a loss to the New England Patriots and has not been listed with an injury since.