Arnold (groin) was listed as a limited practice participant on Thursday's injury report.

Arnold (knee) has returned to Sunday's game against the Cardinals, Nolan Bianchi of The Detroit News reports.

Arnold exited Sunday's game against the Cardinals with a knee injury and is questionable to return, Tyler Drake of ArizonaSports.com reports.

Arnold (illness) is active for Sunday's game against the Cardinals.

Arnold (illness) is questionable for Sunday's Week 3 game against Arizona.

Arnold (illness) did not practice Wednesday.

Arnold (finger) is questionable to return to Sunday's game against the Buccaneers, Dave Birkett of the Detroit Free Press reports.

Arnold (pectoral) was spotted practicing Sunday, Nolan Bianchi of The Detroit News reports.

Arnold, who left Monday's practice with a pectoral injury, is expected to be available for the Lions' regular-season opener against the Rams on Sept. 8, Ian Rapoport of NFL Network reports.

Arnold (concussion) practiced Tuesday after clearing the concussion protocol, Kyle Meinke of MLive.com reports.