Bolt won triple gold at the Olympics in Beijing in 2008
Usain Bolt has said he has recovered from the injuries, which forced him to rest for the last few months.
The sprinter cut short his season on 10 August - four days after losing to Tyson Gay over 100m in Stockholm.
But the triple Olympic champion, 24, is back in training and intends to defend his 100m and 200m World titles at the 2011 World Championships in Korea.
Bolt said: "The good news is that I am 100% healthy and am completely over my back and Achilles tendon problems."
Bolt missed the remaining Diamond League meetings in Zurich and Brussels after suffering his first defeat in two years when he was beaten by Gay in Sweden.
The Jamaican sprinter also did not compete at the Commonwealth Games in September as he struggled to overcome a back injury.
But Bolt, who set a new 100m world record at the World Championships in Berlin in August 2009, has revealed in his
IAAF online diary
that he is raring to go again.
"I am really enjoying training at the moment," he stated. "For the first time in my career I was looking forward to getting back into training before my end-of-season break was over.
"I am looking forward to defending my 100 and 200 metres titles at the 2011 IAAF World Championships in Korea.
"I know the importance of putting in the work required."
Bolt added that his coach, Glen Mills, has been putting him through his paces and that the verdict was "so far so good".
Manchester United fan Bolt also revealed that during his spare time he had been among those avidly following the contract saga surrounging striker Wayne Rooney.
"I have been watching the Manchester United events with Wayne Rooney [with] great interest," Bolt said.
"People know that I am a big Manchester United fan and I am delighted that he has decided to stay at Man United."