Hello to all,
I have no intention to fuel the discussion about what comes first:
FHL or midtarsal collapse.
But Bruce, you cannot stop the wheel continuing to go on.
We have the first results of our FHL study, though we are struggling
to recuperate some apparent corrupt pressure data.
But what I wanted to convey here is that according to our study,
patients with reduced dorsal MTP mobility (measured non-weightbearing
but correlating well with MTP dorsal flexion while walking) show that:
- the time from 1st heel contact to maximal navicular drop (the
latter being a good estimator for midtarsal pronation) is larger in
percentage of stance duration, though not significantly. This means
that maximal drop occurs later during the stance phase for FHL
patients.
- in accordance with it, the moment of maximal navicular drop occurs
after the onset of hallux ground contact (about 4 ms in average)
while the control group have its maximal navicular drop before hallux
contact (1.5 ms in average)
- navicular drop is larger, though not significantly so
- there is no earlier heel lift
I invite you all to reflect on these results, not necessarily
rekindling the the chicken and egg controversy.
Regards,
Bart
--
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Bart Van Gheluwe
Laboratory of Biomechanics
Vrije Universiteit Brussel -Fac. LK
Vakgroep BIOM
Pleinlaan 2, 1050 Brussel, Belgium
Tel.: 02/629.27.33 (31)
Fax: 02/629.27.36
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