In the past several years, I’ve had recurrent knee problems. It usually starts to occur at the end of a long winter training season. This year I’m trying hard to prevent the problem rather than wait for pain to develop.

In previous years, I’ve visited a good sports physio in Oxford (David Jones, Oxford Sports Rehabilitation) who has helped diagnose why there is knee pain and what to do about it. In a nutshell, the problem was related to having one leg significantly weaker than another. Therefore, by the end of a long ride, the weak leg is struggling to keep up. Rather than move up and down in a straight line, the weak leg starts to flop around. It is this unnatural movement which causes pain in the knee to develop.
There was nothing intrinsically wrong with the knee. The problem was in the cycling action which was causing the knee joint to move in a way that caused friction.
The physio had a good model of a leg. When it works properly the leg is like a lever moving up and down in a straight line. When the leg moves at an angle you can see how it causes problems for the knee.
Solution to weak leg
Having a correct diagnosis of the problem is an important starting point. It was a relief to learn that I didn’t have a fundamental problem with my knee, and that it could be solved.
The solution was then to increase strength in the weak leg so it would be able to keep up with the other leg. This was a simple collection of exercises, which involved standing up from a chair on one leg, leg squats on one leg.
I have a series of leg exercises, I try and do them for 20 minutes or so on off days for the bike. I make a particular effort to do these exercises if I’m having a period of time off the bike.
Checking left leg – Right leg imbalance
A good way to check leg strength is to use a leg press machine.
In February 2013, I could only lift 25kg with my left leg. With my right leg I could lift 40kg. It was a huge imbalance in strength. To be honest, I was shocked at how weak that left leg was. 25kg is not very much, when you considered how much I was cycling.
When I tested in April 2009, we didn’t use a leg press machine, but my legs were weaker than in 2013. I couldn’t do a proper leg squat without my legs wobbling all over the place.
Joining a Gym
I’ve always felt a gym is a waste of money. I’ve never been inspired to go to a gym and join a few other sweaty participants with horrible music blaring out. But, I thought that testing my legs could help to self-diagnose any weakness and work to prevent leg imbalances before the problem returns.