Members do not see these Ads. Sign Up.

As most footwear has a thicker heel region than forefoot region, does the shod foot function with a plantarflexed forefoot component, or is it all ankle plantarflexion. If there is a plantarflexed forefoot component can the mid-tarsal joints plantarflex independently or would it be resultant from a subtalar supination. If the answer is obvious, i apologise (must have missed that lesson), thanks

 

I assume its all ankle as there would probably be too much of a dorsiflexory force on the forefoot from GRF.

 

craig, thanks for replying, where i'm going is 'casting', so 1/ if the ankle joint is plantarflexed whilst foot is shod, and 2/ casts are taken whilst ankle jt is "neutral?", is there a morphological? difference, of the foot distal to the ankle jt, between the two, due to changes in soft tissue tension on bone (resulting in changes in jt alignment)?

 

If you push hard enough on the 4/5th head ala Langer while casting to push the ankle up to "neutral" you will see a huge number of fore foot valgus....I would expect.
I don't push that hard and don't find it a problem with what I make.
Regards Phill Carter

 

thanks phill for replying, thats fair enough. Would anyone know of any articles/studies involving imaging foot unshod and shod (at least a lateral view) so i can get a definite on this. It seems although it is pretty basic stuff, isn't it important, or do i need counselling?, thanks again

 

I do recall an article (non-research) on the shape of the lateral column when casting by Justin Wernick that was in Podiatry Management magazine a year or two ago - I just don't have it handy. I can't recall much of what he said, but at the time thought it was consistent with what I was seeing clinically (ie the need to add lateral column support in a lot of people, which I now do more often routinely now).

 

Dear David

The answer is yes and yes.

It depends if their is normal foot mechanics or not.

If normal it is a talocrural joint motion if not there well may be a plantarflexed forefoot or a combination of both.

The classic dysfunction is seen by watcing those walking in the supermarket with their heels rising before they should during the waking cycle.

musmed
Paul Conneely.