Tampa Bay has said they expect Black to recover from a collision with San Diego's Ryan Mathews, but that the sixth-year pro is experiencing some complications with his left arm.
Black was carted off the field after tackling Mathews during the Bucs' victory over the Chargers on Sunday. He was taken to a hospital for observation and later released. He was placed on injured reserve Tuesday.
Black started five games and finished with 32 tackles.
The Bucs also announced defensive end Ernest Owusu and receiver Diondre Borel have been signed to the practice squad. Tight end LaMark Brown and receiver Dale Moss were released from the practice squad.