Cardiff City are facing a centre-back shortage for next weekend's League One match against promotion rivals Bolton Wanderers.
Bluebirds captain Calum Chambers was taken off at half-time during Monday's 1-1 draw at Peterborough United with a wrist injury.
Cardiff were already without Dylan Lawlor due to a toe injury sustained playing for Wales, while Gabriel Osho was serving the second game of a three-match suspension for the red card he was shown against Wycombe Wanderers last month.
The full extent of Chambers' injury is not yet known, but head coach Brian Barry-Murphy said: "He damaged that quite badly. We'll have to get that scanned and there might be an issue there.
"We're a bit stretched in that area with Dylan injured as well. Perry [Ng, usually a right-back] did a great job stepping in.
"With Gabriel Osho suspended and Dylan and Calum injured, we're quite stretched there."
Lawlor's injury is not thought to be serious, with Barry-Murphy adding: "There's no fracture but he's been in discomfort and there's a bit of swelling, so he wasn't really close [to playing] today."
Cardiff are second in League One but have won only two of their past eight matches, cutting the gap between them and the chasing pack outside the automatic promotion places from 11 points to seven.
However, they have a game in hand over Bradford City and Bolton in third and fourth place respectively, prior to Wanderers' visit to Cardiff next Saturday (12:30 BST).
