The Buffalo Sabres' depth on the blue line took another hit with Monday's announcement that Lawrence Pilut underwent "successful" shoulder surgery that will require five to six months for recovery.

Pilut, 23, appeared in 33 games during two separate stints with the Sabres this season, recording one goal with five assists and a minus-8 rating. It is unclear if surgery is the result of a chronic issue or if it is the fallout from the hit he took during the Rochester Americans' season-ending loss in Toronto last month.

Following a second-period hit near his own blue line, Pilut left the Coca-Cola Coliseum ice grabbing his left shoulder but returned to play the third period.  His estimated recovery time means Pilut could miss training camp and the start of the season, a significant loss after fellow defenseman Zach Bogosian underwent hip surgery earlier this offseason.

Pilut, who was signed to an entry-level contract last May, had four goals with 22 assists and a plus-22 rating in 30 regular-season games with Rochester. He failed to record a point during the team's three-game playoff sweep at the hands of the Toronto Marlies.

Though neither the Sabres nor the Amerks are currently playing games, the injury could have a long-term impact on General Manager Jason Botterill's plans for the NHL roster.