Bruins captain Zdeno Chara suffered ligament damage to his knee and is expected to miss four to six weeks, a source confirmed to ESPNBoston.com.

Chara might need surgery, the source said. He suffered the injury in the first period of Thursday's loss to the Islanders and did not return to the game. Afterward, Bruins coach Claude Julien did not have an update on Chara's condition.

"No, no report yet," Julien said. "I haven't even