Letang's lower-body injury has been identified as a groin issue, Dave Molinari of the Pittsburgh Post-Gazette reports. Letang was placed on IR prior to Tuesday's game, but the team still hasn't elaborated on the extent of the injury, other than labeling it has "minor" last week. However, since Letang hasn't resumed practicing with the team yet, it doesn't look promising that he'll return from IR when eligible Thursday versus the Canucks.