Tony Romo is working on getting back

IRVING -- Cowboys quarterback Tony Romo had an x-ray on Monday to check on his broken left collarbone.

X-rays didn't show anything the Cowboys medical staff didn't already know. It's still broken, but the team wanted to make sure there was no further damage to the shoulder.

The x-rays were more of a procedural thing than anything else, and it takes about six-to-eight weeks before the collarbone heals. Romo is expected to miss at least three more weeks.

If the healing process takes longer, the Cowboys might think about placing Romo on injured reserve.

"We have to evaluate it medically as we go here and continue to evaluate it on a daily and weekly basis and see where he is," interim coach Jason Garrett said.

Romo is still involved in the offense whether it's talking to backup quarterback Jon Kitna about what he's seen on the field to talking about things in the offensive meetings.

"He's in early," Garrett said. "He's in that training room at 7 a.m. every morning. He's in our meetings. Once we go out on the practice fields, they have a whole regimen for him to go through. Some rehab stuff, he's very much involved."