Overpronation, The Truth

we already have an understanding that the talus may move more in the transverse and sagittal planes relative to the calcaneus from the published reseach.. your point seemed to be about eversion/ inversion hence me directing my comments to frontal plane mechanics. My point being: it still moves in the frontal plane, as oppose to your earlier inference that it does not. As I pointed out to Ed recently it's more about the percentage of the total range than the absolute number of degrees. Do you see?

So 6.5 degrees in the frontal plane is not the same as zero then is it, as was your earlier contention?

Paul, as you know, your images show the calcaneus not moving because they are static images... :bash: You measured calcaneal motion in your other subjects how? Why are you not showing them here? 6.8 degrees in which plane?- Frontal, right? Take a wild guess what the published research shows regarding frontal plane STJ motion? Here's a bandwagon- see if you can make it on board..

Slipping and sliding all the way down to you know where, Paul. More than happy not to be mowing the lawn.

 

Dear Mr spooner
No I am not slipping and sliding the grass is quite dry thank you.

The 6.5 is the maximum variation in the 10 subjects. Two had a zero variation.

I have heard podiatrists tell me in workshops that is moves upwards of 30+ degrees.

I have reread what I wrote. I may correct myslef by adding the calcaneus does not move any where as much as people think it does.

These are standing images> You talk of Ground reaction force, is that not a ststic image? one moment in time?

Maybe if we were in the same room we may converse differently.

Do not freeze. off for a swim in Jervis Bay.
Regards
PauL conneely

 

I know my spag is pretty poor at times but I really wish you would check your posts Paul! A few typos (or speling errors in my case) is one thing but sentances like this

Are actually quite hard to work out! It makes it more difficult to see what you are trying to say and that affects your ability to communicate your ideas! I'm struggling to understand the point you are trying to make, not because of what you are trying to say, but because of how you are trying to say it!

Just to be clear, your contention is that there is less frontal plane movement of the calc than people think, because people mistake movement of the soft tissue around the calc for movement of the bone beneath. Is that what you are driving at?

 

Dear Robert
maybe life would have been easier for me if we spoke together first.
Yes, this is what
i have been trying to say.
Thank you for this posting
Regards, it is still warm
Paul Conneely

 

Dear Robert
I write everything in word and correct it. we had a lightening storm at the time and I suggest that this has buggered the transmission. Nothing new where I live.
We have had some of the worst weather I can remember since I was a kid in the 60's.
thank you
Paul Conneely

 

Earlier we talked about situations where the shoe suggests more pronation- or calcaneal eversion- is occurring than there actually is.
See below an example-

 

This guy had many shoes, so was happy for me to take the band saw to one of them to highlight how the position of his heel is causing the heel counter to evert.
What I am trying to highlight is how you cannot judge foot function purely by observing shod gait only... or unshod gait only for that matter. This subject had pretty good alignment and function, minimal supination resistance and little evidence of first ray functional restriction when static...
I will try and figure out how to insert the video...

 

Nice pictures craig!

Best way to do a video is to upload to YouTube and post the link.

 

Okey doke- video of above subject...
http://www.youtube.com/watch?v=cqmdXQbd5_I
...and also with the butchered running shoes
http://www.youtube.com/watch?v=V_FuvoIy_-g

 

Fantastic videos Craig!! Looks like, as we originally said, that the horrible "overpronation" that was originally thought to be present by many early on in this thread, was, actually, only an optical illusion.

Here is my explanation from earlier, for those that don't want to read the earlier threads where many were wondering how Haile ran so well with such "horrible overpronation". If you want a good chuckle, go back now and read some of those earlier posts, now with your video in mind.

 

Here is Craig Tanner's first video:

 

Here is Craig's second video:

 

I find all of that fascinating.... but what is it that causes this in some runners but not all runners?