Liverpool boss Rafa Benitez admits they're using the example of Manchester United's Ryan Giggs to find the root cause of Fernando Torres' hamstring problems.

A series of specially designed exercises is already in place to try to ensure that the £21million record signing meets his target of being fit again for the Anfield showdown with Arsenal on December 21.

Benitez places just as much emphasis on guarding against any recurrence, though, and is adamant that the Spain striker will not suffer in the same way as Giggs, who was troubled by hamstring problems for 10 years.

The Manchester United winger's susceptibility was finally traced to his posture, as he sat behind the wheel of his car, and Benitez confirmed that Torres will be quizzed in the same way to try to find out why his right hamstring keeps troubling him.

"Sometimes it can be a problem with your back or how you walk or sit or even sleep, so we need to analyse everything and get to the bottom of it," said Benitez. "Even something small can make all the difference so we need to check him out thoroughly and see what needs changing.

"We have been doing a lot of strengthening work with him that entails specific exercises and stretching, but now we have to look at what we can do to stop it happening again.

"I am confident we will come up with a solution sooner rather than later and that this will not be a long-term problem.

"I know about the difficulties Giggs had but, in a few weeks, Torres will be OK. There is no danger of it becoming a mental problem. I am sure of that. He was raring to go against Marseille, and I am certain he will come back fit and strong again."