The Colts activated McGrone (elbow) from IR on Saturday and removed his injury designation for Sunday's game against the Texans.
McGrone suffered a dislocated elbow during training camp, which led to his placement on injured reserve, James Boyd of The Athletic reports.
McGrone (illness) was estimated as a full participant on Tuesday's practice report.
McGrone (illness) is inactive Sunday against the Raiders, James Boyd of The Athletic reports.
McGrone (illness) has been deemed doubtful to play against Las Vegas on Sunday.
McGrone played 10 snaps on special teams in Sunday's loss to Jacksonville but didn't have a tackle.
The Colts signed McGrone off the Patriots' practice squad Tuesday, Tom Pelissero of NFL Network reports.
McGrone (elbow) played in New England's preseason win over the Panthers on Friday.
McGrone had a large wrap on his right elbow following Thursday's preseason contest against the Giants, Zack Cox of NESN.com reports.
Patriots' inside linebackers coach Jerrod Mayo said McGrone is "healthy" and that "he looks good" during offseason minicamp, Evan Lazar of the CLNS Media Network reports.