Sol Campbell broke his nose in Wednesday's night draw at Portsmouth and requires surgery.
This afternoon, the England defender will see a specialist to determine whether it is essential immediately or can be deferred until the end of the season. If surgery is necessary Campbell will be out for a week.
"Sol's nose is broken," confirmed Arsène Wenger in an exclusive video interview with Arsenal TV Online on Thursday afternoon. "He sees a specialist today [Thursday]. He has no breathing problems but the surgeon has to decide whether he has surgery now or whether we should wait until the end of the season.
"If he needs surgery now it is at least a week out. It is three weeks without any risk but I feel he could play after one week."
The injury is an unhappy postscript to a disappointing evening at Fratton Park. The visitors went ahead and had ample opportunity to extend their lead. However Portsmouth pegged them back midway through the second half. It makes the visit of West Brom on Saturday even more important.
"We don't have any other major problems from last night," said Wenger. "I rested a few players so we'll see who can come back. Apart from Cole, Clichy, Cygan and Lauren then everyone should be available."
Arsenal TV Online subscribers will be able to see the full video interview on Friday morning. In it, Arsène Wenger talks about: Emmanuel Adebayor's chances at Fratton Park, playing catch-up in the race for fourth place and the big weekend for Tottenham and West Brom.
Copyright 2013 The Arsenal Football Club plc. Permission to use quotations from this article is granted subject to appropriate credit being given to www.arsenal.com as the source 13 Apr 2006