LUCKLESS Geelong half-forward Daniel Menzel will step up his rehabilitation from his fourth serious knee injury when he jets off to the United States on Saturday.

Menzel underwent his fourth knee reconstruction (the third on his left knee) in early August, and he started running again in recent days.

Now the 22-year-old, who has not played an AFL game since 2011, is preparing to travel to the American city of Philadelphia where he will train under the guidance of renowned sports injury expert Bill Knowles.

"I've had a pretty intense couple of weeks at the club, so that I'm ready to go over and see Bill," Menzel told AFL.com.au.

"I've been at the club from 9am to 5pm nearly every day. I've been doing leg weights, stability or balance control, bike sessions, swimming sessions, core work.

"It's about getting everything right, not just my knee, so I hopefully won't have any more injuries down the track."

Menzel will be in the USA for two weeks, with eight days devoted to training.

"I do four days on, one day rest day, then another four days on," he explained. "And then I get a couple of days at the end to do my own thing in New York and LA."

Knowles has worked with some of the biggest names in world sport, including golfer Tiger Woods.

In recent months he has also been visited by Adelaide forward Taylor Walker, who suffered a serious knee injury in April.

"A lot of the training will be about movement, balance and strength. It really tests you out," Menzel said.

"I can't twist too much at this stage, but we'll be pushing it as far as we can push it.

"He's also really good at working out which of your muscles are switching on and where your deficiencies and strengths are.

"I can't wait."

Menzel previously worked with Knowles after he suffered his first knee reconstruction in a 2011 qualifying final against Hawthorn at the MCG.

"Last time a few sporting teams flew him out to Australia," he said. "He was with us for a week, and a number of the players saw him.

"I'd done my ACL and Stevie Johnson had his knee injury from the Grand Final, so we spent quite a bit of time with him."

Geelong physio Mark Young will be with Menzel during his first six days in Philadelphia.

"Mark came to Geelong at the end of last year from the English cricket team, and he has worked really closely with me over the last year," Menzel said. "He pretty much knows my training inside out.

"It'll be good for him to come over and bring back some knowledge as well."

Menzel will take in some NBA and NFL games once his training with Knowles is done.

After that, it's back to Geelong and back into his rehab program, with his sights set on starting training with his teammates in February.

"We won't rush it, but speaking to my physios, they say it's not a good thing to train on your own for longer than you need to," he said.

"If you're right to go, you should get put back into the bunch and you should train with them.

"Mainly, it's to help you mentally, I guess."

All going to plan, Menzel is aiming to be fit enough and confident enough to play by June, which will be 10 months on from his reconstruction.

"The 10-month mark will be the very earliest that I think about playing," he said.

"But I'd love to get to eight months and be back in full training, and just train for two months straight without even thinking, 'Should I play this week?'

"If there are setbacks along the way, we'll adjust for that. But my only real goal for next year is to be back in time to be right to play in the finals.

"I'm confident that we're going to have a good side again next year, so hopefully we'll be up in the top four again and I can play some part in the latter part of the season."