The Tampa Bay Lightning announced Thursday that defenseman Mikhail Sergachev underwent surgery to stabilize fractures to his left tibia and fibula.
There is no timetable for his return to the ice.
Sergachev, 25, left Wednesday's 3-1 loss to the host New York Rangers on a stretcher in the second period.
Sergachev and New York's Alexis Lafreniere were going for the puck along the left boards in Tampa Bay's defensive zone when they collided. Sergachev fell backward onto the ice and was clutching his lower left leg.
Sergachev was making his return from a 17-game absence due to a leg injury suffered in December.
"It's super tough. We've been through it with a few other guys in the past," Lightning defenseman Victor Hedman said after the game. "Sergi's first game back after missing an extended period of time, to see him in such pain, it's hard. You feel for him and you pray for the best."
Sergachev has 19 points (two goals, 17 assists) in 34 games this season. The two-time Stanley Cup winner has 257 points (48 goals, 209 assists) in 475 career games.
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