The 28-year-old suffered the injury in an FA Cup tie against Newcastle on January 26 but has made slower progress than expected after originally having surgery back in May.

A statement released by Arsenal today read: "Tomas Rosicky yesterday underwent routine revision surgery in Germany.

"The operation went as planned and Tomas will now spend at least a few weeks convalescing in Germany.

"Thereafter he will follow a tailored rehabilitation programme devised by our medical team."

The injury has restricted Rosicky to just 61 first-team appearances for the Gunners since joining from Borussia Dortmund in May 2006.

It is not yet clear when he will be fit to return to training.