• Manchester United winger also suffered ligament damage
• 'A plate has been inserted to stabilise the fracture'
The Ecuadorian winger underwent an operation yesterday after suffering the injury in a challenge with Kirk Broadfoot in the Champions League tie at Old Trafford.
"The operation went well," said a United spokesperson. "A plate has been inserted to stabilise the fracture but there is obvious significant ligament damage that follows a dislocation and he will be out for a good portion of the season."
In the immediate aftermath of the incident, the United manager Sir Alex Ferguson ruled Valencia out of the remainder of the campaign and likened the injury to one suffered by Alan Smith in 2006.
The statement also denied claims attributed to the Ecuador team doctor about Valencia's mental state and insisted he is feeling positive about his recovery.
"Contrary to recent reports, there has been no official contact from the Ecuadorian national team," said the spokesperson. "Antonio is perfectly fine, very positive and very determined."
Glad to hear the opp went well and he could return this season though I would prefer him not too rush back and come back when he's fully fit and if that's next season so be it.
Fletcher relishing Reds test
Manchester United midfielder Darren Fletcher is looking forward to an attacking game against Liverpool this weekend and is sure the Merseysiders will not come to Old Trafford to defend.
The Red Devils could not break down a determined defensive wall put up by Rangers in their Champions League clash earlier this week.
But Scotland international Fletcher thinks that Liverpool will not do the same, despite a stuttering start to the new season.
Fletcher said: "Liverpool's history will not allow them to put nine men behind the ball.
"That is not their style.
"Under Roy Hodgson I am sure they will be disciplined and well drilled. But they will look to win the match as well."
It is something United's players will be mindful of after Liverpool's visits to Old Trafford in the last two seasons.
The Reds inflicted a 4-1 defeat on Manchester United during the 2008-09 campaign, and last season took the lead before United scored twice to win.
And in making 10 changes for the game against Rangers, manager Sir Alex Ferguson emphasised the importance of the fixture.
Fletcher added: "It is the biggest game because of the history and the success the two clubs have had.
"We have had a lot of battles over the years.
"There is a great history between the two clubs and we have equalled their number of league titles now, so a lot is looked into that.
"It is a massive occasion, when form goes out of the window.
"Liverpool will be looking to kick-start their season but to have them at Old Trafford so early just emphasises the importance of getting the right result."