Over-Pronation

Overview

Normally, when you walk or run, your heel is the first part of your foot to strike the ground. As your body weight shifts to the middle of the foot, the arch of the foot naturally flattens out a bit. This flattening is called pronation. If your feet flatten more than normal, it?s called over-pronation or flat feet. Over-pronation can cause many problems, such as an Achilles tendon injury or heel pain. It may lead to knee problems.Overpronation

Causes

There are many possible causes for overpronation, but researchers have not yet determined one underlying cause. Hintermann states, Compensatory overpronation may occur for anatomical reasons, such as a tibia vara of 10 degrees or more, forefoot varus, leg length discrepancy, ligamentous laxity, or because of muscular weakness or tightness in the gastrocnemius and soleus muscles. Pronation can be influenced by sources outside of the body as well. Shoes have been shown to significantly influence pronation. Hintermann states that the same person can have different amounts of pronation just by using different running shoes. It is easily possible that the maximal ankle joint eversion movement is 31 degrees for one and 12 degrees for another running shoe.

Symptoms

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.

Diagnosis

People who overpronate have flat feet or collapsed arches. You can tell whether you overpronate by wetting your feet and standing on a dry, flat surface. If your footprint looks complete, you probably overpronate. Another way to determine whether you have this condition is to simply look at your feet when you stand. If there is no arch on the innermost part of your sole, and it touches the floor, you likely overpronate. The only way to truly know for sure, however, is to be properly diagnosed by a foot and ankle specialist.Over-Pronation

Non Surgical Treatment

Get a gait analysis of your running style, this will highlight if you overpronate, oversupinate or have a neutral gait. Most podiatrists, physio's and sports therapists will offer this service, as do some specialist sports shops. Find a clinic. If you overpronate, get orthotics with extra medial support. Many running shoes have a harder material on the inside of the midsole (the thick hard foam part of the running shoe). This means the inside of the shoe will be compressed less under load and support the inside of the foot preventing it from rolling in or flattening. For people with considerable overpronation, another option is to have an orthotic device fitted. Orthotic insoles come in many types and prices. Some are pre-molded and can be bought off the shelf. These are ok for the majority of problem feet. However some cases may require specially casted orthotics from a relevant sports injury therapist or podiatrist.

Prevention

Massage and stretch the calves to increase dorsiflexion at the foot/ankle. Dorsiflexion is the bending at the ankle. By improving the dorsiflexion, one will have more flexibility at the ankle, which will allow the foot to over-pronate less. Massage the IT Band with a foam roller or tennis ball to quiet down the tightness throughout this part of the leg. The IT Band attaches from the glute maximus and runs down the side of the leg into the knee area. When the IT Band is tight it will accelerate the force of the leg moving inward, which will cause the foot to move inward as well. It is often that tightness through the IT Band that promotes over-pronation. Decreasing over-pronation, which is very prominent in runners, will help add endurance, speed and efficiency to your run and ultimately place less stress on your body.

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