Take a look back at the BBC series Olympic Dreams as Ennis first confronts the injury problems that eventually ruled her out of the 2008 Olympics
ATHLETICS WORLD CHAMPIONSHIPS Venue: Olympic Stadium, Berlin Date: 15-23 August Coverage: Watch the action live and highlights on BBC Two, BBC HD, Red Button, Radio 5 live and the BBC Sport website (video for UK users only)
Full BBC coverage details
Britain's new world heptathlon champion Jessica Ennis has admitted she thought she may not compete again after missing the Beijing Olympics through injury.
The 23-year-old pulled out of last year's event after suffering a stress fracture to her right ankle.
She told BBC Radio 5 live: "When I found out about my injury I was worried it might not heal 100% and I would have problems with it in the future.
"But after the scans it started to heal and I realised it was going to be ok."
The Sheffield athlete had originally pulled out of an IAAF event in Gotzis with a foot injury in June 2008, before the full extent of the problem was discovered and she was forced to miss the Olympics.
Ennis reflects on Heptathlon success
The ankle problem prompted Ennis to change her take-off foot for the long jump, making her victory all the more special.
"I needed to put all my effort and energy in to the World Championships this year," she added.
"It was about winning a medal so to win a gold medal is unbelievable."
Meanwhile, UK Athletics has hit back at suggestions that it hindered the progress of Ennis.
Ennis' coach Toni Minichiello claimed the 23-year-old's support team had been "decimated" and that UKA was to blame.
But UKA chairman Ed Warner told BBC Radio 5 live: "We've worked very hard to make sure Jess was in the best shape for Berlin and it has worked.
"I think this was Toni feeling some of the pressure ahead of the competition."
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