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effect of forefoot posting on tissue medial to medial STJ?

Discussion in 'Biomechanics, Sports and Foot orthoses' started by JonathanH, Jan 30, 2013.

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  1. JonathanH

    JonathanH Member


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    Hi everyone,

    Just some thoughts that came to mind...

    For individuals with palpable "Medial STJ axis" and medial heel pain associated with tissues resisting 'pronatory forces'...

    While I seem to understand reverse mortons and cluffy wedges to facilitate windlass and lower force required to plantarflex 1st ray and encourage high gear propulsion..

    Wouldn't those those prescription variables
    increase the increase pronatory moment arm = increase tissue stress on medial heel structures in late midstance/propulsion?

    Thank you all for taking the time to guide my understanding in what seems a confusing field!

    Jonathan
     
  2. efuller

    efuller MVP

    The theory is related to the windlass mechanism. Pronation of the STJ will unwind the windlass until the hallux hits the ground. Then tension in the fascia will tend to limit STJ pronation. The theory is that the tension in the fascia is what causes the medial heel pain. If you can reduce tension in the fascia with the reverse Morton's extension you can reduce stress in the windlass even though you are increasing pronation moment at the STJ from the ground.

    Eric
     
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