Theo Walcott has been ruled out of the rest of Arsenal's season and the World Cup in Brazil

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World Cup knockout: Arsenal and England rocked after Walcott is sidelined for SIX MONTHS with knee injury in Cup win over Spurs.

Theo Walcott has been ruled out of the rest of Arsenal's season and the World Cup in Brazil after rupturing the anterior cruciate ligament of his left knee during Arsenal's 2-0 win over Spurs in the FA Cup on Saturday.

England and Arsenal are in shock after Theo Walcott was ruled out for the rest of the season and the World Cup with a cruciate ligament injury.

The winger was carried off in Saturday’s FA Cup win over Tottenham after catching his studs in the turf and will miss six months with a ruptured anterior ligament in his left knee.

The news is a huge blow for England manager Roy Hodgson ahead of the World Cup in Brazil this summer.

Walcott was booked in for a scan at 3pm yesterday, but early indications were that he had only strained knee ligaments, which would have ruled him out for six weeks.

It is understood Walcott did not show any telling signs of more significant damage in the hours after the injury. He was not in much pain as he was taken off the field, so there was genuine horror at the scan results yesterday.

Walcott will have surgery in London in the coming weeks before starting the long road back to fitness.

Arsenal team-mate Aaron Ramsey tweeted: ‘Gutted for Theo, he’ll come back stronger after this. Been fantastic for us so far this season. Have a speedy recovery mate.’