When the ankles over-pronate, it throws everything out of alignment. The bones in the feet can actually shift over time, and the muscles and tendons in the leg and ankle will twist. This places repetitive stress on the ligaments, tendons, joints and muscles of the foot, which can cause injury. If your feet are over-pronating, you may notice your muscles feet unusually tired when you way or stand, or they may ache. But symptoms will vary by your weight, age and activity.
Unless there is a severe, acute injury, overpronation develops as a gradual biomechanical distortion. Several factors contribute to developing overpronation, including tibialis posterior weakness, ligament weakness, excess weight, pes planus (flat foot), genu valgum (knock knees), subtalar eversion, or other biomechanical distortions in the foot or ankle. Tibialis posterior weakness is one of the primary factors leading to overpronation. Pronation primarily is controlled by the architecture of the foot and eccentric activation of the tibialis posterior. If the tibialis posterior is weak, the muscle cannot adequately slow the natural pronation cycle.
It is important to note that pronation is not wrong or bad for you. In fact, our feet need to pronate and supinate to achieve proper gait. Pronation (rolling inwards) absorbs shock and supination (rolling outwards) propels our feet forward. It is our body?s natural shock-absorbing mechanism. The problem is over-pronation i.e. the pronation movement goes too deep and lasts for too long, which hinders the foot from recovering and supinating. With every step, excess pronation impedes your natural walking pattern, causing an imbalance in the body and consequent excessive wear and tear in joints, muscles and ligaments. Some common complaints associated with over-pronation include Heel Pain (Plantar Fasciitis) ,Ball of foot pain, Achilles Tendonitis, Shin splints, Knee Pain, Lower Back Pain.
Look at your soles of your footwear: Your sneaker/shoes will display heavy wear marks on the outside portion of the heel and the inside portion above the arch up to the top of the big toe on the sole. The "wet-foot" test is another assessment. Dip the bottom of your foot in water and step on to a piece of paper (brown paper bag works well). Look at the shape of your foot. If you have a lot of trouble creating an arch, you likely overpronate. An evaluation from a professional could verify your foot type.
Non Surgical Treatment
Treatment with orthotics will provide the required arch support to effectively reduce excessive pronation and restore the foot and its posture to the right biomechanical position. It should be ensured that footwear has sufficient support, for example, shoes should have a firm heel counter to provide adequate control.
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.