Supination
May 18th, 2012 by admin
As long as they are moving in the right direction, most people have no conscious awareness of what their feet are doing when they walk. If seen in slow motion, though, it becomes apparent that every step is composed of two distinct elements, and each has its own rolling motion.
When walking, a person’s heel strikes the ground first. As it does, the foot rolls to the outside in a movement called supination. The heel then lifts off the ground, and as the body weight shifts over the ball of the foot to propel the body forward, the foot rolls inward in a movement called pronation.
Abnormal Supination
Although supination is normal, over-supination is not. Over-supination refers to a condition in which the heel’s outward roll is exaggerated or prolonged. When this happens, the outside of the foot bears most of the body’s weight, and this prevents it from properly absorbing shock.
Over-supination is common in people who have high arches, and it often leads to such problems as ankle sprains, plantar fasciitis and ligament ruptures. People who over-supinate are also prone to chronic pain in the soles of the feet as well as in the back, neck, knees and hips.
Signs of Over-Supination
People who over-supinate frequently wear down the outside edges of the heels on their shoes. An examination of their footprints as they walk in wet sand will often reveal only a very thin strip along the outside edge and no impression whatsoever in the region of the arch.
Treatment of Over-Supination
Before exercising or walking any distance, people who over-supinate should thoroughly stretch their legs and feet. They should also ensure that their shoes properly support their feet while providing enough cushioning to compensate for the added stress. A moderate arch support can also help, but one that is overly high can force the foot to roll even further outward, exacerbating the problem.
Rigid shoes and those that provide excessive stabilization are bad choices for anyone who over-supinates. Running shoes, on the other hand, are an excellent option, as they usually provide both support and cushioning in the optimal proportions.





