Pronation is a normal motion that our feet make as they walk. With each step, the heel touches the ground first, then the foot rolls forward to the toes, causing the ankle to roll inward slightly and the arch to flatten out. That?s normal. But when that rolling inward becomes more pronounced, that?s over-pronation, which is a big problem. You can usually see over-pronation by looking at the back of the leg and foot. The Achilles tendon normally runs straight down from the leg to the foot, hitting the floor at a perpendicular angle. In feet that over-pronate, the Achilles tendon will be at a slight angle to the ground and the ankle bone will appear more prominent than usual.
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.
Over-pronation is a condition where the arch flattens out which makes the feet roll inward while walking. This condition is also known as flat feet. It imposes extreme additional stresses on the plantar fascia, a fibrous band of tissue which connects the heel to the forefoot. Over-pronation makes walking a painful experience because of the additional strain on the calves, heel and/or back. Treatment for over-pronation involves the use of specially-made orthotics which offers arch support and medial rear foot posting as corrective measures.
Your healthcare provider will ask about your symptoms, medical history, and activities and examine your feet. Your provider may watch you walk or run. Check the motion of your feet when they strike the ground. Look at your athletic shoes to see if they show an abnormal pattern of wear.
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.
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.