Coach Marc Trestman wouldn't say how the injury happened on Wednesday, other than Bushrod fell and it was an accident. He said he wasn't sure how severe the injury is.
"It happened accidentally in practice," Trestman said. "We're just gonna be optimistic that it's nothing that's going to take this too long. It's day to day, and we'll see where we are."
"I know Matt and Garza both got work today," said Trestman. "I haven't looked at the tape. But they were in uniform. They did work."
If Bushrod can't play, Michael Ola could move to left tackle after filling in for Slauson.
"It's how we operated the last month of the season," Trestman said. "We've been without Roberto. We've been without Matt. We'll see where things are without Bush. Certainly, it's an unfortunate incident. Certainly, we don't want to get anybody hurt. It happened accidentally in practice. That makes all of us uncomfortable. But we have to move forward."
Defensive tackle Jeremiah Ratliff (concussion) sat out Thursday. He still has to pass some tests to be cleared.
"He's still going through this process and he hasn't been OK'd," said Trestman. "Until he is, every one is independent of itself. There's no two that are alike. Hopefully, he'll be back soon, but right now he hasn't passed all the tests."
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