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The innovation was developed by podiatrist Dr Howard Dananberg after hundreds of his female clients complained of injuries - such a painful knees and ankles - related to wearing high heels. He worked out the "optimal" position of the foot to avoid pain by distributing a person’s weight evenly across the shoe.
Here is the patent that Howard Dananberg was granted for this: Comfortable high heel shoe
A high-heel shoe design applicable to varying heel heights, having a heel seat having a substantially neutral or slightly downwardly inclined angle (relative to the shank plane), and an arch support extending forward from the heel seat and having a first portion which supports the head of the navicular of the wearer in approximately the same plane (relative to the shank plane) as the wearer's heel bones. The shoe also includes a shank extending downwardly and forwardly from the first portion of the arch support, and a toe support region which extends at an inclination upwardly and forwardly from the shank whereupon the first metatarsal of the wearer is buttressed by the phalanges of the wearer to prevent forward sliding of the foot of the wearer relative to the shoe, thereby preventing jamming of the human digits into the toe portion of the shoe, while an increase of about 16% or more of the wearer's weight is borne by the heel seat, as compared to standard...
Insolia is a product which works by very subtly altering the position of the foot in a high heeled shoe. Approximately 20-25% of the weight borne by the forefoot is moved posteriorly towards the heel. Approximately 85% of women who try Insolia feel this immediately, and it truely makes high heels more comfortable.
Insolia was created using in-shoe pressure analysis equipment. The thing that has always surprised me is how subtle changes to foot position can create such profound changes in function. Podiatrists have been geared toward visual observation of changes in foot position to assess changes in function. When measured via in-shoe systems, far less correction is required to achieve the improved outcome.
Millions of pairs of Insolia have been sold worldwide. Our return rate is under 2%.
In the Biomechanics paper, it states that plantar pressures in high heels (with Insolia insoles) were compared to athletic shoes, and the increase in pressure associated with the heels (22%) was less than that reported in a different paper (Mandato). Does this mean that no comparisons were made with and without Insolia insoles in the high heel, or am I missing something?