The anatomy of a normal foot allows for both to occur at the same time. Approximately 30% of the population have a normal foot. The remainder of people either overpronate (95% of abnormal feet) or
oversupinate (5% of abnormal feet). The important thing to know is that all feet pronate and supinate, but abnormal feet do one of these things too much or at the wrong time. When the foot
overpronates or oversupinates, several foot ailments can develop.
There has been some speculation as to whether arch height has an effect on pronation. After conducting a study at the Rose-Hulman Institute of Technology, Maggie Boozer suggests that people with
higher arches tend to pronate to a greater degree. However, the generally accepted view by professionals is that the most pronation is present in those with lower arch heights. To complicate matters,
one study done by Hylton Menz at the University of Western Sydney-Macarthur suggests that the methods for measuring arch height and determining whether someone is ?flat-footed? or ?high-arched? are
unreliable. He says, ?For this reason, studies investigating the relationship between static arch height motion of the rearfoot have consistently found that such a classification system is a poor
predictor of dynamic rearfoot function.
When standing, your heels lean inward. When standing, one or both of your knee caps turn inward. Conditions such as a flat feet or bunions may occur. You develop knee pain when you are active or
involved in athletics. The knee pain slowly goes away when you rest. You abnormally wear out the soles and heels of your shoes very quickly.
Firstly, look at your feet in standing, have you got a clear arch on the inside of the foot? If there is not an arch and the innermost part of the sole touches the floor, then your feet are
over-pronated. Secondly, look at your running shoes. If they are worn on the inside of the sole in particular, then pronation may be a problem for you. Thirdly, try the wet foot test. Wet your feet
and walk along a section of paving and look at the footprints you leave. A normal foot will leave a print of the heel, connected to the forefoot by a strip approximately half the width of the foot on
the outside of the sole. If you?re feet are pronated there may be little distinction between the rear and forefoot, shown opposite. The best way to determine if you over pronate is to visit a
podiatrist or similar who can do a full gait analysis on a treadmill or using forceplates measuring exactly the forces and angles of the foot whilst running. It is not only the amount of over
pronation which is important but the timing of it during the gait cycle as well that needs to be assessed.
Non Surgical Treatment
Orthotics are medical devices used to provide support to correct a physical abnormality. They can provide arch support when needed to remedy over-pronation, and in this particular cases the orthoses
used are usually convenient shoe inserts. These can be taken in and out of shoes, and will be carefully tailored by your podiatrist to the specifics of your foot. It can take some weeks before the
effects of the inserts can become truly noticeable, and in many cases your podiatrist will want to review your orthotics within a few weeks to make fine adjustments based on how well they have worked
to reduce your pain.
Strengthen the glutes to slow down the force of the foot moving too far inward. Most individuals who over-pronate have weak glute muscles and strengthening this area is a must. A simple exercise to
strengthen glutes is lateral tube walking across a field/court/room. Place a lateral stretch band around your ankles and move your leg sideways while keeping your feet forward.