Starks suffered a significant neck injury during Monday night's 27-21 victory at Cincinnati. The injury is not career-threatening, but it is serious enough to end his season.
Starks, in his seventh year with the Steelers, consulted with doctors Tuesday to see if the injury required surgery or would heal with physical therapy, the Pittsburgh Post-Gazette reported, citing a source close to the player.
An MRI exam later Tuesday indicated the injury was more serious -- a disc injury in the upper vertebrae or neck area, the Post-Gazette reported.
Starks, who played collegiately at Florida, has started at left tackle the past three seasons and was starting right tackle for two seasons before that.