Arsenal manager Arsene Wenger has admitted that he was left shocked by his side's injury troubles during the 4-0 FA Cup win over Hull City this evening.

Per Mertesacker, Gabriel Paulista and Aaron Ramsey were all forced off prematurely as the Gunners cruised into the quarter-finals at the KC Stadium, adding to an already lengthy injury list at the club.

There is a particular problem in defence, with Arsenal ending the match with Mathieu Flamini at right-back and Nacho Monreal partnering Calum Chambers in the middle, but Wenger is hopeful that the injuries to his two starting centre-backs are not serious.

"I'm a bit in shock there. We lost our two centre-backs in the game, and after we lost Aaron Ramsey," Wenger told BT Sport.

"Mertesacker is not serious, just a concussion, and I think Gabriel looks alright. Ramsey I am a bit more concerned [because it's] a muscle/thigh injury. But apart from that we have played well."

Arsenal already have Petr Cech, Laurent Koscielny, Jack Wilshere, Alex Oxlade-Chamberlain, Santi Cazorla and Tomas Rosicky sidelined through injury.