Jack Wilshere has had surgery on his left ankle to repair ankle ligament damage and will be out for around 3 months. The injury, sustained after a heavy tackle from Manchester United defender Paddy McNair--a tackle Arsène Wenger called bad, but not malicious--is the 9th injury Wilshere has sustained to his ankles. Fortunately, it is not the same ankle that caused him to miss seventeen months.
Fitness concerns, however, continue to circle around Wilshere and cause questions to be asked of whether his tremendous potential will ever be reached. Wilshere has been unable to have sustained run of games since the 2010-11 season, with this season the first where he was a regular for both club and country, to mixed results. These questions are not easily answered when Wilshere continues to suffer injury.
In the short term, Arsenal are left a little thin in central midfield, with only Aaron Ramsey and Mathieu Flamini presently fit. Santi Cazorla and Alex Oxlade-Chamberlain could also fill in if needed.