The Norway international limped out of the action early in the second half on Sunday after scoring the opening goal - his first of the campaign - in Villa´s 2-0 Barclays Premier League victory.
Carew underwent a scan on Monday and Villa will make no official statement until the full extent of the results are known within the next 24 hours. But it is understood Villa manager Martin O´Neill´s initial fears that Carew could be out of action for a considerable period will be realised.
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