Martinek, who recently returned from a broken foot that sidelined him for nine games, was injured again Saturday in the Islanders' 4-2 victory at Montreal. The fifth-year player came off the ice on a stretcher in the first period after he was checked into the boards behind the Islanders net by Montreal Canadiens left-winger Guillaume Latendresse.
Martinek landed awkwardly on his left ankle when he bounced off the boards after absorbing the seemingly harmless check. He was sitting up as he was taken off the ice on a stretcher.
The Islanders recalled defenceman Drew Fata from Bridgeport of the AHL and had him in the lineup Sunday during a 2-1 shootout loss to the Washington Capitals.
Martinek played in the Islanders' first 36 games of the season, but has missed 10 of the past 17. He has two goals and 15 assists.
The 30-year-old native of the Czech Republic broke a foot Dec. 26 against the Rangers and played again the next night at Ottawa. It wasn't until three days later that the injury was discovered.
Martinek returned Jan. 16 at Pittsburgh and recorded four assists in seven games before being injured again.
Fata, who had two goals and five assists in 40 games with Bridgeport this season, took 13 shifts against the Capitals on Sunday and logged eight minutes 30 seconds of ice time.