Can you guess why this patient is developing a neuroma on the left foot, between the 3rd and 4th metatarsals?
This gal presented to the office with pain in the left foot, in the area she points to as being between the 3rd and 4th metatarsals. It has been coming on over time and has become much worse this spring with hiking long distances, especially in narrower shoes. It is relieved by rest and made worse with activity.
Note the following:
She has an anatomical short leg on the left (tibial)
internal tibial torsion on the left
left forefoot adductus (see the post link below if you need a refresher)
Lets think about this.
The anatomical short leg on the left is causing this foot to remain in relative supination compared the right and causes her to bear weight laterally on the foot.
The internal tibial torsion has a similar effect, decreasing the progression angle and again causing her to bear weight laterally on the foot, compressing the metatarsals together.
We have discussed forefoot adductus before here on the blog. Again, because of the metararsal varus angle, it alters the forces traveling through the foot, pushing the metatarsals together and irritating the nerve root sheath, causing hypertrophy of the epineurium and the beginnings of a neuroma.
In this patients case, these things are additive, causing what I like to a call the “triple threat”.
So, what do we do?
give her shoes/sandals with a wider toe box
work on foot mobility, especially in descending the 1st ray on the left
work on foot intrinsic strength, particularly the long extensors
treat the area of inflammation with acupuncture
Dr Ivo Waerlop, one of The Gait Guys
#forefootadductus #metatarsusadductus #neuroma #gaitanalysis #thegaitguys #internaltibialtorsion