Gibbs to miss rest of campaign
Left-back Gibbs, 20, suffered a depressed open fracture to his first metatarsal on his left foot during Arsenal's Champions League match against Standard Liege November.
The fracture failed to heal satisfactorily and Gibbs will now have a bone graft to help ensure a full recovery which will keep the youngster out for about five months.
"Needless to say I'm gutted - there's just no other word," said Gibbs.
"The other option to surgery would have been to wait and let the bone grow in my foot, but we didn't want to do that because I'd have to wait another six weeks just to have another scan.
"I'd run the risk of it carrying on into next season, and we don't want to do that.
"I'm now just looking to recover from the injury, work really hard and be ready for next season."
Gunners manager Arsene Wenger will at least have back-up for first-choice Gael Clichy in French youngster Armand Traore.