The Giants announced the move Wednesday, saying that Jenkins is having ankle surgery, ending his season prematurely.
ESPN reported that the ankle has bothered Jenkins for the past two months. He aggravated the injury in Thursday night’s loss to the Redskins when he was tackled at the goal line while returning a Kirk Cousins interception for a touchdown.
Defensive tackle Khyri Thornton was signed and took his place on the roster for Sunday’s game in Oakland.
Jenkins started nine games. He missed the Sept. 18 game against Detroit with an ankle injury and the Nov. 5 game with the Los Angeles Rams because he was suspended after he missed a practice following the Giants’ bye week.
Jenkins has a team-high three interceptions, two returned for touchdowns. Jenkins also had 31 tackles, a team-high nine passes defensed, and forced a fumble.
Thornton played in 23 games with six starts for the Detroit Lions from 2015-17. He missed the first six games this season while serving a suspension for violating the NFL substance abuse policy. He played in four games and was released on Nov. 21.
The Giants currently have 19 players on injured reserve. They waived linebacker J.T. Thomas with an injury settlement this week.
New York changed the status of defensive end Romeo Okwara from reserve/injured to reserve injured, designated for return. Okwara was placed on injured reserve on Oct. 17 with a knee injury he suffered in practice the previous week.
(© Copyright 2017 CBS Broadcasting Inc. All Rights Reserved. The Associated Press contributed to this report.)