A foot that overpronates acts like a loose bag of bones during the walking cycle. This makes this type of foot very flexible but inefficient. The foot has to work much harder to propel the body, fatiguing easily and placing mechanical stresses on the lower body. We like to use the analogy of digging a hole in the dirt. Overpronating feet are like using a broom to dig the hole. It won?t break down quickly, but you will be digging for a very long time, or until eventually wear and tear will take effect. Wouldn?t you rather have a shovel to work with. This is in essence what an orthotic can do for your feet. This is why orthotics have become an evidence based treatment for so many foot ailments, as they can effectively manage overpronation.
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.
If you overpronate, your symptoms may include discomfort in the arch and sole of foot, your foot may appear to turn outward at the ankle, your shoes wear down faster on the medial (inner) side of your shoes. Pain in ankle, shins, knees, or hips, especially when walking or running are classic symptoms of overpronation. Overpronation can lead to additional problems with your feet, ankles, and knees. Runners in particular find that overpronation can lead to shin splints, tarsal tunnel syndrome, plantar fasciitis, compartment syndrome, achilles tendonitis, bunions or hallux valgus, patello-femoral pain syndrome, heel spurs, metatarsalgia.
When sitting, an over-pronating foot appears quite normal, i.e. showing a normal arch with room under the underside of the foot. The moment you get up and put weight on your feet the situation changes: the arches lower and the ankle slightly turns inwards. When you walk or run more weight is placed on the feet compared to standing and over-pronation will become more evident. When walking barefoot on tiles or timber floors over-pronation is more visible, compared to walking on carpet or grass.
Non Surgical Treatment
An overpronator is a person who overpronates, meaning that when walking or running their feet tend to roll inwards to an excessive degree. Overpronation involves excessive flattening of the arches of the feet, with the roll seeing the push off take place from the inside edge of the foot and the big toe. When this happens, the muscles and ligaments in the feet are placed under excessive strain, which can lead to pain and premature fatigue of the foot. Overpronation is most commonly experienced in people who have flat feet or fallen arches.
Subtalar Arthroereisis. The ankle and hindfoot bones/midfoot bones around the joint are fused, locking the bones in place and preventing all joint motion. This may also be done in combination with fusion at other joints. This is a very aggressive option usually reserved for extreme cases where no joint flexibility is present and/or the patient has severe arthritic changes in the joint.