The injury appeared to happen at 1:53 of the third period, when Boyle blocked Blues center Jori Lehtera’s slap shot.
Boyle, 38, made his debut with the team after spending the last six seasons with the San Jose Sharks. He signed a two-year $9 million contract in the offseason to help shore up the team’s deficient power play from last season.
In the game against St. Louis, Boyle had 14:01 of ice time, with two shots on goal, two penalty minutes and was a +1.
Boyle had six of his 12 goals and 12 of his 24 assists on the power play last season for San Jose. He had three assists on the power-play during the team's first-round playoff series loss to the Los Angeles Kings.
The Rangers announced Friday they have recalled defenseman Michael Kostka from the AHL to take Boyle's place on the roster. Kostka, 28, has played in 63 NHL games over the course of the past two season. He signed a one-year deal with the Rangers this summer.
- Scooby Axson