While all of the attention this week has been on quarterback Kyle Orton’s ankle (he was not present at the open period of practice today after missing practice Wednesday), the Broncos have some questions at running back too.

Correll Buckhalter, who was limited with a knee injury on Wednesday, was not present during the open portion of practice today. Neither was LaMont Jordan, who missed yesterday’s practice with a back injury.

Those injuries left Knowshon Moreno and Peyton Hillis as the only healthy tailbacks from the 53-man roster practicing today. The Broncos also have running back Lance Ball on the practice squad.

Moreno could see his workload increase again if Buckhalter and Jordan are out. Last week against Washington, Moreno got all of the tailback carries after Buckhalter lost a first-quarter fumble. The two had been splitting time before last week. Broncos coach Josh McDaniels reiterated today he was comfortable with Moreno and Buckhalter, but Moreno was playing well so he stayed in most of the game, with Buckhalter playing a situational role.

Moreno had 97 yards last week when he got a majority of the carries.

“I was able to get in a groove, but even with the rotation I can get in a groove,” Moreno said. “I feel pretty good with that.”

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