Adam Bolder looks certain to miss Burton`s home game against Hereford.
The experienced midfielder suffered a dislocated shoulder during last weekend`s defeat at Cheltenham.
"It was a bad dislocation, but the good news from the hospital is that there is no indication of any bone damage," said Albion boss Paul Peschisolido. "We now have to wait and see what the scan reveals in terms of soft tissue damage.
"Until we know that, it is impossible to say how long Adam will be out of the side. However, I don't think there is much of a chance he will be available for the Hereford game."
Defender Aaron Webster will make his 500th appearance for the club on Saturday.
Hereford are waiting on international clearance for Amadou Rabihou to make his debut.
The Cameroon striker joined on Tuesday but is still yet to receive the green light to feature for the npower League Two side, while Simon Davey's other deadline-day addition, Dominic Werling, is set to go straight into the squad.
Goalkeeper Daniel Connor will miss the trip to the Pirelli Stadium due to a hip problem which could rule him out for up to a month.
Davey remains without the services of striker Mathieu Manset due to a hamstring problem, meaning O'Neil Thompson should continue in his absence, while fellow forward Sam Malsom is also still out due to medial knee ligament damage.
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