Learn About Your Feet
Pronation is the action of the foot as it roles inward upon foot contact with the ground. This action acts as a shock absorber for the foot and rest of the body. Over pronation occurs when a person's foot rolls inward and their arch flattens while performing weight bearing tasks. The foot may appear normal while sitting, with a noticeable arch under the foot, but over pronation becomes evident when a person stands or walks. Even people with normal foot structure can develop over pronation as a result of excessive foot stress and improper arch support.
There are many possible causes for over pronation including walking on hard surfaces for extended periods of time - either barefoot or with flat shoes, heredity, obesity, an imbalance between the posterior and anterior leg muscles, or tight gastrocnemius and soleus muscles among other causes.
Since over pronation causes the person to walk along the inner portion of the foot, this poor alignment may lead to injury in the foot and ankle among many other areas of the body. Problems such as heel spurs, plantar fasciitis, shin splints, knee pain, back pain, and other medical issues can be the result of over pronation.