Trotz declined to give more details on the injury, which occurred when Vegas Golden Knights defenseman Brayden McNabb hit Kuznetsov hard against the boards late in the first period of Game 2 of the Stanley Cup Final on Wednesday night.
Kuznetsov stayed down for a moment and appeared to be holding his left arm and hand in pain as he left the ice. He did not return, ending an 11-game point streak that began in the second round of the playoffs. The Capitals won the game 3-2 to even the series.
Trotz said he might have more information on Kuznetsov's status for Game 3 -- which is Saturday in D.C. -- after Friday's optional skate. He is not sure if the top-line center will take part on Friday.
McNabb's hit was not penalized, but Trotz told reporters after Wednesday's game, "We thought it was high."
"You lose one of your top players on what we feel is a questionable hit," Trotz said. "The league will look at it. But your bench rallies around it."
No news of any possible discipline toward the defenseman has been announced or reported.
Kuznetsov, 26, leads the NHL in points this postseason with 25, one ahead of linemate Alex Ovechkin. He totaled 27 goals and 83 points during the regular season, both second on the team to Ovechkin, and his 56 assists led the squad.
After averaging 18:49 of ice time in the regular season, Kuznetsov has averaged 20:36 through 21 playoff games despite leaving after 4:26 of ice time in Game 2.
--Field Level Media