Injuries leave Steelers thin on defensive line

The Steelers don’t know much right now regarding the status of their three defensive stars who are dealing with groin injuries -- T.J. Watt, Joe Haden and Devin Bush -- but they do have a much clearer picture of what’s happening on their defensive line.

And it’s not pretty.

Already missing Stephon Tuitt because of a knee issue that required surgery, the Steelers lost nose tackle Tyson Alualu in Sunday’s 26-17 loss to the Raiders to a fractured ankle that required surgery on Monday and could sideline him the remainder of the season.

Alualu was placed on injured reserve Monday. Henry Mondeaux was signed off the practice squad to take his place.

That leaves All-Pro Cam Heyward as the lone remaining starter on the team’s defensive line. Something that was considered a strength of the team -- its defensive front -- is now severely wounded.

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