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.
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Last updated: 30 August 1999
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