The operation on Andrew Flintoff's injured knee has been brought forward to Monday night after England won the fifth Ashes Test with a day to spare.
The all-rounder will miss England's upcoming one-day matches and has set no definite timescale for his return.
"The fortunate thing about winning a day early is that they have brought my op forward," said Flintoff.
"The harsh reality is I need to get my knee sorted out but it's made me more determined to get back to playing fit."
Flintoff signed off his Test career on Sunday by helping England reclaim the Ashes from Australia, courtesy of a 197-run victory at The Oval which clinched the series 2-1.
Flintoff interview - the day after
The 31-year-old is still committed to representing his country in one-day and Twenty20 internationals and is hopeful that exploratory surgery on his damaged right knee will enable him to do so in the future, with the tour of Bangladesh beginning in February 2010 a potential target.
"The incentive is wearing the three lions and I desperately want to wear them again, albeit in one-day matches and Twenty20s," said Flintoff.
"The surgeon has a good idea of what he's going to find. Then there's the rehab... we'll see when I wake up after the anaesthetic and see where I'm at with it. Realistically I think before Christmas I'm going to struggle.
"Obviously I've retired from Test cricket but there's a tour to Bangladesh which I desperately want to be involved in. So realistically I think that could be my first cricket after this Test."
Flintoff will miss Thursday's match in Ireland, the Twenty20 internationals, the series against Australia and the ICC Champions Trophy in South Africa.
Jonathan Trott has been added to the squad for the Ireland match whilst the selectors have opted not to replace Flintoff in their squads for the Twenty20 internationals and the ODI series against Australia.
Having departed the Test arena where he has so often inspired England to victory and established himself as one of the best all-rounders in world cricket, Flintoff's first goal after regaining his fitness is to do a similar job in the limited overs game.
"I want to be the best one-day cricketer in the world and I can set my sights on that," said Flintoff.
England team director Andy Flower says he is confident that Flintoff will be back and performing well for his country.
"He looks after himself and he's a strong man," said Flower. "To come back as many times as he has is a testimony to that will and physical strength.
"I'm sure he'll come back and do very well for England."
England squad for one-day international v Ireland in Belfast on Thursday, 27 August and Twenty20 internationals v Australia at Old Trafford on Sunday, 30 August and Tuesday, 1 September:
PD Collingwood (Durham, captain), JM Anderson (Lancashire), RS Bopara (Essex), TT Bresnan (Yorkshire), SCJ Broad (Nottinghamshire), JL Denly (Kent), EJG Morgan (Middlesex), MJ Prior (Sussex, wk), AU Rashid (Yorkshire), OA Shah (Middlesex), RJ Sidebottom (Nottinghamshire), GP Swann (Nottinghamshire), IJL Trott (Warwickshire), LJ Wright (Sussex).
England squad for one-day international series against Australia (4-20 September) and the ICC Champions Trophy (22 September-5 October):
Above squad, plus AJ Strauss (Middlesex) as captain, minus IJL Trott.
This page is best viewed in an up-to-date web browser with style sheets (CSS) enabled. While you will be able to view the content of this page in your current browser, you will not be able to get the full visual experience. Please consider upgrading your browser software or enabling style sheets (CSS) if you are able to do so.