The England international last featured for the Gunners in April but has gone under the knife and is set to miss a number of months following his latest setback.
Arsenal has confirmed that Danny Welbeck has undergone knee surgery after failing to sufficiently overcome an injury picked up in April.
The north London club had hoped it would not need to resort to surgery and the injury would heal over time, but the England international has finally gone under the knife and will be out of action for several months.
"Danny Welbeck has undergone surgery on his left knee after being unable to sufficiently step up his rehabilitation work," a club statement read.