The 24-year-old American has played 90 minutes of all three Championship fixtures this season.
"I am just so happy to be here. Playing these games, it is just so nice," Trusty told the club's website after Saturday's loss to Cardiff City.
"The guys have quality, the other team has quality and they're pressing you and they really want to win.
"You see the fans, the atmosphere, singing 'USA' and I absolutely love it. It is an environment and an atmosphere that you want to be in. And, honestly, it is a team that you want to be in."