Understanding the biomechanical relationships of hyperpronation and the reasons for this common problem, provides for a logical approach to reducing its undesirable effects by utilizing a Postural Control Insole™ (PCI).

The PCI is designed to facilitate the angle of the medial column resulting from the incomplete untwisting of the bones.

Two Unexplained Responses to Rothbart’s Foot Structure

There are two responses to RFS. One causes hyperpronation, and interestingly, the other causes supination.


We have defined people who freely release their feet to hyperpronate as releasers: The foot is released to follow the motion of the first metatarsal and big toe as they travel downward. The result is a partial or full collapse of the arch.

Releasers are among your patients who often suffer from foot, knee, back and neck pain and in general feel the effects of hyperpronation even at younger ages. Releasers often display a more collapsed posture. They often fall in the category of patients who respond less favorably to manual therapy because their poor posture tends to quickly undo the positive effects of treatment.

Releasers can typically be recognized by three or more of the characteristics of hyperpronation: Outward turning feet, forward leaning posture, unbalanced hips, increased lordosis, rounded shoulders, head forward, knees traveling inward, collapsing ankles, and an unstable gait.


Bracers respond to hyperpronation the exact opposite way of releasers. We have defined the term bracers for people who walk on the outside of their feet, as long as they can, to prevent or delay hyperpronation. Depending on the severity of their bracing pattern, their shoes wear on the outside of the heels and on the outside of the forefoot. Bracers overuse their muscles, anterior tibialis to control foot motion, vastus lateralis to control knee action, gluteus medius to control hip action, trapezius to control shoulder action and scalenes to control head action.

Bracers are not restricted in range of motion, but they are muscularly braced. The muscles on the front of their bodies (flexors) and muscles on the back of their bodies (extensors) are usually tight. Because bracers muscularly control their posture, they are typically asymptomatic for the first 3-4 decades of their life. Typically bracers complain of few, if any, joint problems until well into their forties, and if they have experienced joint problems they have been non-debilitating and not of much concern.

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