Allen Park — The struggling Detroit Lions defense might be down another key piece when the team hosts the Green Bay Packers on Sunday.

According to an NFL Network report, the hand injury Quandre Diggs suffered against the Dallas Cowboys turned out to be a fractured bone. It remains unknown if he’ll be able to play through the injury or will have to miss significant time.

In his fourth season, Diggs has shifted into a bigger role, playing nearly every defensive snap the first three games as a safety/nickel corner hybrid. Through four weeks, he’s tallied 16 tackles, four pass defenses and an interception.

The Lions rewarded Diggs with a three-year, $18.6 million contract extension this offseason.

If he can’t go Sunday, the Lions made need to add some defensive back depth this week. Safety Tavon Wilson, who would be the logical replacement in the lineup, was limited to four snaps against the Cowboys before he was removed from the game with a back injury.

jdrogers@detroitnews.com

Twitter: @Justin_Rogers