GLENDALE, Ariz. — So much for Carson Palmer’s sore right elbow.
The Arizona quarterback completed 27 of 32 passes, 12 of them to Larry Fitzgerald, and the Cardinals ended an eight-game losing streak against NFC West foes by beating the St. Louis Rams, 30-10, on Sunday.
Palmer, questionable for the game after being limited in practice during the week, threw for 269 yards and a touchdown as the Cardinals (8-5) won for the fifth time in six games.
Arizona’s Karlos Dansby returned an interception 23 yards for a touchdown and John Abraham tackled Rams quarterback Kellen Clemens for a safety.
The Cardinals lost rookie safety Tyrann Mathieu in the third with what coach Bruce Arians said ‘‘appears to be an ACL’’ injury to his left knee. Full story for BostonGlobe.com subscribers.