"Up until now we have been focusing on managing the pain so I can train and get myself in shape to go out there to win in Moscow - which has meant not focusing on finding a cure for the injury. The time has now come to stop chasing fitness and look to cure the problem," she said in a statement on Wednesday.
The Briton, world champion in 2009 and silver medallist two years ago, has struggled to shake off a persistent left Achilles problem. She only made her competitive comeback last week, almost 12 months after winning the Olympic title in London.
"I am so glad I got to compete in London last weekend (at the Anniversary Games Diamond League meeting) as it gave me a clear picture of where I am - and it is definitely not where I want to be both regarding pain and also form.
"To say I am gutted is an understatement - no athlete likes to miss the opportunity to compete at a major championships - they don't come round that often," she added in the statement issued by British Athletics.
(Writing by Justin Palmer, editing by Ken Ferris)
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