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if you apply a 4 degree varus wedge to the forefoot, why would the LMJA suppinate? i thought the mtj would suppinate for a valgus deformity?

but if you applied a 4 degree valgus wedge the stj pronates? why?

 

Re: applying wedges to a foot thats normal

There is no such thing as the LMJA - it dosen't exist. Please don't tell that your univeristy is still teaching that?

 

Re: applying wedges to a foot thats normal

hahaha yes they are. indulge me. lets say it does exsist..why would it suppinate?

 

Re: applying wedges to a foot thats normal

Hi Kona,

How are you defining "normal", as in "normal foot"?

 

Re: applying wedges to a foot thats normal

yes sir, normal as in : normal ROM, axis normal, etc

 

Re: applying wedges to a foot thats normal

OK - thank you.
Another question - are we talking hypothetically, or is this something you've observed in a number of subjects?

 

theoretically,

 

By adding a varus wedge you are applying a supinatory force, hence the forefoot will supinate and vice versa for the valgus wedge. Just as would happen if you did the same to the rearfoot.

 

Not necessarily. The forefoot varus wedging may increase supinatory moment, without a change in supinatory position. Analyse where the wedge is positioned: assuming it is under the shafts of the metatarsals, A forefoot varus wedge will apply dorsiflexion moment to the the metatarsals, relatively increasing from lateral to medial... now continue this analysis proximal and distal.