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Another study day, another model.

Pretty simple this one. Its to demonstrate the relevance of axial location with reference to where ORF is most efficient. The pole is fixed on a pin under the heel and can be positioned in various points. A volunteer stands on the X, placing the centre of mass medial to the axis. The green ropes represent different places for an insole to "push" (obviously this is done by pulling on the rope).

The supination moment needed to "supinate" the "foot" is a constant (body mass of volunteer * distance from axis". A strain guage (fishing scales) shows how much translational force must be applied in a variety of locations in order to acheive this moment.

Or, in easier terms, how hard the orthotic has to push to move the foot.



I might be able to upload a video after the weekend...

 

Rob that might make a nice shoe!!

 

It's about 5 ft long and 2 wide!

Good for walking on snow?...

 

So where`s the vid? Or was the cameraman not up to scratch?