OTTAWA -- Ottawa Senators forward Clarke MacArthur left Game 2 of the Eastern Conference Second Round against the New York Rangers in the second period with an upper-body injury.
MacArthur, who missed almost two seasons after sustaining four concussions in 18 months, said his injury was not related to his head.
He appeared to take a hit from Rangers defenseman Ryan McDonagh at 18:24 of the first period. His final shift of the period ended at 18:31.
MacArthur played two shifts in the second period, with the last one ending at 5:37.
"It's something he had last game and he aggravated today," Senators coach Guy Boucher said. "It's upper-body. He was already feeling better after, so we'll see in the next day."
Video: NYR@OTT, Gm2: MacArthur exits Game 2 with injury
Game 3 of the best-of-7 series is at New York on Tuesday. Ottawa leads 2-0 after a 6-5 overtime win.
MacArthur missed 78 games in each of the past two seasons. He returned for four games this regular season before playing in each of the first eight games of the Stanley Cup Playoffs, against the Boston Bruins and Rangers.
MacArthur, 32, has dealt with post-concussion syndrome, with a fourth concussion taking place at training camp this season. That caused him to miss almost all of the regular season -- and ponder the end of his career -- before returning. He scored twice against the Bruins in the first round, including the series-clincher in overtime of Game 6. Prior to his first goal, in Game 2 against Boston, he had not scored in more than two years.