The Steelers signed Fehoko (arm) to the practice squad Tuesday, Teresa Varley of the team's official site reports.
The Steelers placed Fehoko (arm/shoulder) on injured reserve Saturday, Aaron Wilson of KPRC 2 Houston reports.
Fehoko left Wednesday's practice with arm and shoulder injuries, Alan Saunders of SteelersNow.com reports.
Pittsburgh waived Fehoko on Monday, Brooke Pryor of ESPN.com reports.
Pittsburgh signed Fehoko from its practice squad to the active roster Wednesday, Ian Rapoport of NFL Network reports.
Fehoko was waived by the Chargers on Tuesday, Gilbert Manzano of The Orange County Register reports.
Fehoko has agreed to a deal with the Chargers.