The midfielder's career has been plagued by time spent on the sidelines.
The 24-year-old travelled to meet Bayern Munich's specialist Dr Hans Muller-Wolfhart in an attempt to put his long list of muscle problems behind him, and he explained that he was willing to go along with Wolfhart's methods as he is desperate to rediscover his fitness.
"I flew to see him in Munich," he said. "I was there from Monday to Friday morning and had about 50 injections over that time. He injects and injects."
"There's a lot of anti-inflammatories and lubricants for the joints - it's all technical stuff, the physios know more than me.
"I just go along with it, and I'll do anything to stay fit. There's nothing major, it's just niggling injuries, but I don't want it to continue. When you' re out for a week here and there, it sets you back and you're out of the team.
"A couple of the lads have been - Lee Cattermole and Billy Jones - and had good results from that. The doctors put it to me, and of course I'll go and do anything.
The Mail reports that back and hamstring problems have prevented the former Everton youngster holding down a regular place in Sam Allardyce's side this season.
With the Black Cats situated in the Premier League's relegation zone, there is no question that when fully fit Rodwell is one of the players in the squad that has the quality to help keep them in the top flight.
However, having been sidelined for much of his career since he left Goodison Park in 2012, it is not only a question of rediscovering his fitness, but also his match sharpness having struggled to make an impact during a difficult spell at Manchester City.
And with some perhaps questioning whether Rodwell will ever realise the potential he showed with the Toffees, the midfielder will be hoping that this latest attempt to get fit finally allows him to show everyone what he is capable of.