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I recently started working with a podiatrist who does not use mod root style orthotics or d filler modifications due to fear or causing hallux limitus.
This is not something that I have heard before and am wondering if this is a current idea or an old disproved theory.
Thoughts?

 

Anything that jams up the first ray and prevents first ray plantarflexion has a theoretical risk of increasing the risk for hallux limitus.

The so called 'modified' root type orthotic design does not do this if it is prescribed, designed and made properly.

 

http://www.podiatrytoday.com/prescribing-orthoses-has-tissue-stress-theory-supplanted-root-theory

A root device strictly speaking is designed to accommodate some variation of normal. Therefore the Root Device should not stop the normal action of the windlass.