Within the content of a recent thread is some material which might be worth closer scrutiny . Any thoughts ?
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"Would you agree that push off from the contralateral foot helps prevent over pronation in the reference foot during walking . That is , the push off phase helps move the center of mass from between the two feet to immediately above the talonavicular joint in the reference foot ?
A recent experiment (Farris et al , see below ) has shown that with a tibial nerve block to prevent the contraction of the foot intrinsics , push off could not be fully completed during gait and that participants adopted a shorter stride pattern and increased hip muscle activity .
My interpretation of these changes in motor strategy is that through executive function , the body quickly adapts to loss of push off force and hence incomplete shifting of the COM in the transverse plane during gait , by adopting a shorter stride and using abnormal hip activity .
During gait , if the COM cannot be moved from between the feet to over the foot with each stride , then gravity driven pronation will be a problem .
In short , intrinsic foot muscle deficits lead to abnormal gait and ,in my opinion , possibly to pathological pronation . "
- The functional importance of human foot muscles for bipedal ...
https://www.pnas.org › content
by DJ Farris - 2019 - Cited by 12 - Related articles17 Jan 2019 - Contrary to expectations, the intrinsic foot muscles contribute minimally to supporting the arch of the foot during walking and running. However, these muscles do ...
Last edited: Thursday at 6:37 PM
scotfoot, Thursday at 6:12 PMReport
#34Reply
scotfootWell-Known Member
Question ; If deficits in the intrinsics can impair push off and so alter gait , can such deficits also cause problems during weight shifting , the most common time for the elderly to suffer falls ?Gerrard Farrell
If an older person wishes to shift weight but lacks push off power then might a more difficult to control " lean/sway strategy " be employed ?
Interesting .
Glasgow
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Defining excessive, over, or hyper-pronation: A quandary
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Intrinsic foot muscles morphology and Achilles tendinopathy
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Defining excessive, over, or hyper-pronation: A quandary
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Intrinsic foot muscles morphology and Achilles tendinopathy
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