Screen shot of WAM modification taken from a video
The Windlass Activation Mechanism (WAM) is terminology that is used by Alliance Orthotics to describe a modification that they use that allows more flexion in the anterior part of the medial arch of the foot orthotic shell. There is a decrease in thickness of the polypropylene orthotic shell in this that is CNC milled thinner. The theory behind the WAM is that by allowing more first ray plantarflexion then this will help the windlass mechanism, especially if functional hallux limitus is present.
Link to video from Alliance Orthotics: https://www.facebook.com/watch/?v=246716906429476
Other labs do use variations of this modification, they just do not call it a WAM. CNC milling and 3D printing of foot orthotics enable the use of variations of thickness in the foot orthotic shell. Previously, similar effects could only be achieved with design features such as a first ray cut out or Kinetic Wedge.
Related Topics:
Cluffy wedge | Kinetic Wedge | Reverse Mortons Extension | First ray cutout | 2-5 Bar | Dynamic Wedge | Morarty Pad | Dancers Pad | Sagittal Plane Wedge | Windlass mechanism
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