John Michael Liles left the game after spilling hard into the board. Liles was coming the ice with speed when he got tripped up by Ben Bishop stick as he was trying to clear the puck.
Liles was helped off the ice by his teammate and did not return to the game. Apparently it's an upper-body injury that would keep Liles off the ice for a few days. We'll get back to you as soon as the Bruins make an official announcement.
Here's the video: