Roger Federer is confident that he will be at 100 per cent when the 2017 season rolls around as he steps up his recovery from knee surgery.

The Swiss great ruled himself out of the Rio Olympics and the US Open in July, having struggled with injuries for much of the first seven months of the year.

Federer went under the knife for the first time in his career in February, having suffered a torn meniscus in his left knee and then missed the French Open with back trouble.

Rehabilitating his knee has become the focus for Federer in the latter part of 2016, but he believes he will reap the rewards in the new year.

"I am completely on track," Federer told Tages Anzeiger. "The hope is that in [physical] conditional I am again 100 percent almost, like with treadmill and sprints. 

"Now we increase the intensity, and also I will start to play tennis again.

"The difficult phase was Rome through Wimbledon, because I noticed something is wrong with my knee. 'I don't feel any progress, I'm not properly prepared for Wimbledon.'"

Despite the pre-tournament concerns, Federer's decision to play at the All-England Club was vindicated by a run to the semi-finals, before defeat to Milos Raonic.

"It was okay, and right, to play Wimbledon," he said. "I was surprised getting that far. That is why it was one of my most memorable Wimbledons."