The news makes the England back an immediate doubt for the four autumn internationals, which get under way against the Pacific Islands on November 8. England then take on Australia, South Africa and New Zealand.

A statement on the Falcons’ website read: ‘Newcastle and England fly-half Jonny Wilkinson today underwent a scan on his left knee, following the injury which forced him from the field in the 25th minute of Tuesday’s Guinness Premiership match at Gloucester.

‘The scan confirmed a dislocation of the knee, and Wilkinson will now receive further specialist advice and treatment.’
Character

Despite the latest blow to the injury-ravaged fly-half’s career, Falcons director of rugby Steve Bates attempted to strike an optimistic note. He told the website: “It is obviously disappointing for Jonny to receive an injury just when he was back playing fantastic rugby, but he has enormous strength of character and I am sure he will come back stronger despite this blow.”

Wilkinson has been plagued by injury since landing the winning drop-kick in the 2003 World Cup final against Australia.

He needed treatment on a shoulder injury after that match and has since picked up knee, bicep and groin injuries.

He has also required surgery to cure kidney and appendix problems before being sidelined with his latest injury.