Kevin Pietersen has been passed fit for the fifth Test against Australia which starts on August 21, live on Sky Sports Ashes HD.
England will be bidding to make history at The Oval by completing a first-ever 4-0 home series Ashes victory, but there had been some concerns over Pietersen's fitness ahead of the match.
England head coach Andy Flower had already refused Pietersen permission to play for Surrey in the Twenty20 finals day this weekend in order to rest the calf niggle that has been troubling him since the second Test.
An ECB statement released on Wednesday said: "Kevin Pietersen had a precautionary scan on his right knee today as part of an ongoing monitoring process following the bone bruising injury that occurred in February.
"Kevin remains available for selection for the fifth Ashes Test and will continue to receive treatment on his right knee as part of his rehabilitation programme over the course of remainder of the series and beyond."
Surrey's caretaker coach Alec Stewart accepted the decision not to make Pietersen available for a rare Brown Caps appearance at the weekend.
He told Sky Sports News: "There are no problems at all and we fully understand.
"It wouldn't be right for Kev to play in t20 finals day - we accept that. Hopefully his knee is right for the Test next week."
England will name their squad for the final Test on Saturday, while Australia head to Northampton for a two-day match against the England Lions which starts on Friday.
The fifth Ashes Test is live on Sky Sports Ashes HD on Wednesday at 10am