[log in to unmask] wrote:
> 
> In a message dated 4/11/00 9:07:29 AM %GMT_MINUS_08_A_DAYLIGHT%,
> [log in to unmask] writes:
> 
> <<
>  >>I am not satisfied with the sagittal plane blockade explanation for the
>  following reasons
> 
>  1. When you see a blockade supposedly caused by a functional hallux limitus
>  there is relatively more weight on the heel.  This is counter to what is
>  expected.>>
> 
>  This may be counter to what YOU would expect, but this is precisely what
>  happens.  The problem here is the model in which your biomechanical
> decisions
>  are made.  I have explained the rationale in detail previously.  Simply put,
>  if you can't step forward, you can't lift the heel.
>   >>
> Howard, I agree with you that we are beginning to repeat ourselves and I will
> agree with you that we will have to agree to disagree on the rest of the
> points in my last post.  In the above comment, where do the forces come from
> that limit heel lift?  If the tendency is to move and it doesn't move a force
> or a moment has to limit the motion.
> 
> Respectfully,
> Eric Fuller
Dear Dr. Fuller,
Does not one of Newton's Laws say that a body in motion will remain in
motion unless acted upon by an other  force?  If a foot attached to a
body moving forward hits a buttress  (locked 1st MTP jt) then the locked
1st MTP jt against the ground Is the other force. The body then takes
the  next path of least resistance which would be across, as an example,
the subtalalr joint. I visited a  local beach a couple of years ago with
my family where I saw a surfguard doing his inservice traing in his
barefeet in the  wet sand.  Looking at his footprints and observing his
gait, I thought as I watched him carrying the rescue board, "That guy is
perfectly straight and displays no gait anomalies. (?) " (when you say
it to yourself you don't care if you misspell them!)  Quite amazingly, I
saw him again within the month, after finishing at the beach, at my
office.  Walking barefoot on my floor he pronated badly , locking up at
the 1st MTP.  Heel pain,  arch shin pain and low back pain. He resumed a
normal existence off the beach.  I was amazed at the differences I saw,
almost as much as having remembering what I saw the previous month to
begin with! "Why such a difference?" I asked myself.  I may be miles off
with my answer to my own question but I realized his 1st MTP joint met
with no obstructing resistance, but rather with the very forgiving sand
which  did not give need for any other planal compensation.  I realize
quite soberly that it was 'an experiment of one' but have since
considered  since the restricting environments where we spend most of
our "poorly shod" lives.  Hard, flat, bound and unforgiving.  The other
possibility of course is that when you're on the beach with the babes,
the waves, the rays, a board under your arm heading for open water,
dude, you can do no wrong."
Sincerely ,
Freeman Churchill, Certified Pedorthist (Canada)


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