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Lions tailback Theo Riddick is sidelined with an ankle injury.

(Mike Mulholland | MLive.com)

ALLEN PARK -- With Ameer Abdullah and Dwayne Washington dealing with injuries, Theo Riddick has been the Detroit Lions' top running back.

And now he's missing practice, too.

Riddick, who scored two touchdowns in Sunday's 24-23 win against Philadelphia, has suffered an ankle injury and missed practice Wednesday. Washington also continued to sit with an ankle injury, while Abdullah is on injured reserve recovering from foot surgery.

Detroit's rushing attack has fallen to 23rd in the NFL because of the injuries, and losing Riddick -- just ahead of a matchup Sunday against Aaron Donald and the Los Angeles Rams -- would deal them yet another blow. Right now, Zach Zenner and the recently acquired Justin Forsett are the only healthy running backs on the team.

At this rate, Forsett might have to shoulder a game-day load against Los Angeles.

"I've been playing a long time, so a lot of things I can marry to information I already had beforehand," Forsett said. "So I think I can pit it up fairly quickly."

Elsewhere on offense, left guard Laken Tomlinson (neck), receiver Anquan Boldin (ankle) and Eric Ebron (knee/ankle) also missed practice with injuries. On defense, DeAndre Levy (quad/knee) and Haloti Ngata (shoulder) sat.

The good news is Ezekiel Ansah made his return from a high ankle sprain, though he was listed as limited, along with safety Don Carey (ribs), defensive tackle A'Shawn Robinson (shoulder) and guard Larry Warford (hip).