Technical Information

Biomechanics is the science concerned with the action of forces on the living body. By studying the moving body, we can determine normal and abnormal variables for foot and leg biomechanics. One of the most common biomechanical abnormalities is excessive pronation of the foot which is seen in as many as 75% of the population.

With this excessive pronation comes lowering and elongation of the arch of the foot, inward tilting of the heel and internal rotation of the leg.

In this position, the foot becomes unlocked and unstable like a loose "bag of bones" and the ability of the foot to propel the body forward efficiently is severely reduced. This also results in an array of symptoms from the toes to the back and anywhere in between.

Aerodyn orthotics are so effective because they control movement at the sub-talar joint of the foot. This joint is situated under the ankle joint and allows you to tilt your foot inwards and outwards. A 5° varus 'wedge' is incorporated into the heel cup of Aerodyn orthotics during manufacture to control subtalar joint pronation perfectly and help hold the heel vertical. By holding the heel in this position, postural faults can be corrected to prevent injury, wear and tear.

Last updated: 30 April 2003
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