Here we take a look at some of the other injury problems which have hit the Gunners this season.
ALEX OXLADE-CHAMBERLAIN: Attacking midfielder Oxlade-Chamberlain was on a high after scoring in the end-of-season friendly away to Brazil, but his start to the new campaign was halted after just 45 minutes of the Gunners' opening day Barclays Premier League home defeat to Aston Villa because of a knee injury. Oxlade-Chamberlain spent five months on the sidelines before returning to action in January, incidentally away at Villa Park.
LUKAS PODOLSKI: German forward Podolski started the season in good form with a double in the win over Fulham, but tore a hamstring in the second leg of the Champions League qualifier against Fenerbahce. He was out until Boxing Day, when the German marked his return from the bench with a goal in the 3-1 win at West Ham.
AARON RAMSEY: Wales midfielder Ramsey had been in superb form as the Gunners drove up the Premier League, scoring 13 goals. However, his progress was checked by a thigh injury suffered on Boxing Day, which has kept him out of action in 2014 so far. Arsenal looked to bring in a replacement during the January transfer window, but Sweden international Kim Kallstrom, signed on loan from Spartak Moscow, was then ruled out himself with a back problem.
THEO WALCOTT: England international Walcott had been producing some good displays before his World Cup dream was shattered by what at the time looked an innocuous fall during the closing stages of Arsenal's FA Cup third-round win over Tottenham at the Emirates Stadium - when he was pelted with missiles as he was carried off on a stretcher. The diagnosis, though, proved severe as it was confirmed he had ruptured an anterior cruciate ligament and would need around six months' rehabilitation.
ABOU DIABY: It has been one setback after another for combative France midfielder Diaby. After looking to have made real progress at the start of the 2012/2013 campaign, in March 2013 it was announced Diaby had torn the anterior cruciate ligament in his left knee and he has not played since.