Bradley was trying to adjust his shot in midair in the paint when he was crashed into by Elton Brand
Bradley could be seen wincing in pain on the floor and has been brought to the locker room after returning to the bench. Bradley dislocated his left shoulder in the first round of the playoffs against the Atlanta Hawks but didn't miss any time after being cleared by team doctors for Game 4 of that series.
The Celtics have confirmed that the injury is to the left shoulder and that Bradley will be evaluated during halftime (via Celtics). Bradley's shoulder has reportedly dislocated multiple times this season.