Blackhawks D van Reimsdyk has surgery to repair broken left kneecap

The Chicago Blackhawks say defenseman Trevor van Riemsdyk had left knee surgery on Thursday, sidelining the rookie for three to four months.

He broke his left kneecap when he took a puck off his leg during Sunday's 6-2 victory over Dallas.

The 23-year-old van Riemsdyk has one assist in 18 games. He was placed on the long-term injury list on Monday. Chicago begins a six-game road trip on Thursday at Calgary.