Welcome to rewind Friday, Folks. We always seem to be talking about bunions, and receive quite a few questions on them. This brief video discusses where they come from.

Enjoy!

Join Dr Ivo as he talks about pronation and supination. This is excerpted from the National Shoe Fit Certification Program.

want to know more? email us at thegaitguys@gmail.com

The Importance of the “Toe Box”

In this brief video, excerpted from the National Shoe fit Training Program, Shawn and Ivo talk about the importance of adequate toe box size and how to relates to fit. Enjoy!

all material copyright 2012. all rights reserved

Season 1: Podcast 8 of the Gait Guys Experience Now available!

You know you want it! Here it is:

You can check it out on Libsyn, by clicking here:

This link will get you a nicely laid out “show notes” and pod player.
http://thegaitguys.libsyn.com/the-gait-guys-experience-podcast-8-s1e8

This one will get you to the show player of ALL of our podcasts.
http://directory.libsyn.com/shows/view/id/thegaitguys

Here are the show liner notes:

1-   neuroscience story

 http://www.scientificamerican.com/article.cfm?id=how-do-whales-and-dolphin
What do dolphins and sleep walking have in common?
Do ultra marathoners sleep while they run ?
Join us for the podcast neuroscience introduction.

2- More lectures available  on www.onlineCE.com 13 hours of courses there !  Go there and look up our lectures

3- OFF TOPIC Discussion:
Hi gents ! What is with the wide tripod abducted legs in obese folks >?
So many of them supinate and have a wide tripod…….
thanks alot
Julio C, in Sao Palo Brazil !

4- Off Topic:   Sole lifts or heel lifts ? Which should you use and why ? And When ?
 
5- EMAIL Question:
Hi! 

I saw your blog and one of your youtube videos and thought I would mail in a gait question! I appreciate any input or information you have about this. I was wondering about people that walk with their foot in the abducted position – why is this and what are the implications for such a gait? I know some people with flat feet have that tendency but I don’t have that and walk at baseline with my foot abducted. I took note of this since I’ve developed some hip pain recently and noticed that when I make a conscious effort to walk with my feet straight it actually feels abnormal (more comfortable and natural with the feet abducted). Why is this? Any input into this puzzle would be appreciated. 
Thanks much!  -Sheeva

6- EMAIL CASE:
Guys, love you, love your show

you guys need to do a stand up routine at a club……..maybe host Saturday Night Live !  Maybe pair  you up with Justin Timberlake !
Anyhow…….enough ego stroking…….
What is your take on the biomechanical implications of a short quadriceps muscle in gait ?

7- Pedographs or software ???? what is our take ?

8- EMAIL CASE
Hi Fellas

Can you talk a bit more about the proprisensory system in gait ?
You talked about it several blog posts but i would love to hear you expand upon it. 
thanks
Jordan

9- EMAIL:
 Is it true that walking in flip flops is bad for you?  I’ve heard a lot of “experts” say it will cause your arches to fall.  Thanks! – Norma

Season 1: Podcast 8 of the Gait Guys Experience Now available!

You know you want it! Here it is:

You can check it out on Libsyn, by clicking here:

This link will get you a nicely laid out “show notes” and pod player.
http://thegaitguys.libsyn.com/the-gait-guys-experience-podcast-8-s1e8

This one will get you to the show player of ALL of our podcasts.
http://directory.libsyn.com/shows/view/id/thegaitguys

Here are the show liner notes:

1-   neuroscience story

 http://www.scientificamerican.com/article.cfm?id=how-do-whales-and-dolphin
What do dolphins and sleep walking have in common?
Do ultra marathoners sleep while they run ?
Join us for the podcast neuroscience introduction.

2- More lectures available  on www.onlineCE.com 13 hours of courses there !  Go there and look up our lectures

3- OFF TOPIC Discussion:
Hi gents ! What is with the wide tripod abducted legs in obese folks >?
So many of them supinate and have a wide tripod…….
thanks alot
Julio C, in Sao Palo Brazil !

4- Off Topic:   Sole lifts or heel lifts ? Which should you use and why ? And When ?
 
5- EMAIL Question:
Hi! 

I saw your blog and one of your youtube videos and thought I would mail in a gait question! I appreciate any input or information you have about this. I was wondering about people that walk with their foot in the abducted position – why is this and what are the implications for such a gait? I know some people with flat feet have that tendency but I don’t have that and walk at baseline with my foot abducted. I took note of this since I’ve developed some hip pain recently and noticed that when I make a conscious effort to walk with my feet straight it actually feels abnormal (more comfortable and natural with the feet abducted). Why is this? Any input into this puzzle would be appreciated. 
Thanks much!  -Sheeva

6- EMAIL CASE:
Guys, love you, love your show

you guys need to do a stand up routine at a club……..maybe host Saturday Night Live !  Maybe pair  you up with Justin Timberlake !
Anyhow…….enough ego stroking…….
What is your take on the biomechanical implications of a short quadriceps muscle in gait ?

7- Pedographs or software ???? what is our take ?

8- EMAIL CASE
Hi Fellas

Can you talk a bit more about the proprisensory system in gait ?
You talked about it several blog posts but i would love to hear you expand upon it. 
thanks
Jordan

9- EMAIL:
 Is it true that walking in flip flops is bad for you?  I’ve heard a lot of “experts” say it will cause your arches to fall.  Thanks! – Norma

Bike Fit Clinic Tonite

Drs Waerlop and Asthalter (Dr Ivo’s office) will be holding their annual bike fit clinic this evening from 6-7:30 at at Summit Chiropractic & Rehabilitation, PC in Dillon, Colorado. frame sizing, seat height, fore and aft positioning, and handlebar height will be discussed, with common dysfunctions resulting from improper fit.

The event is usually a sell out, and we expect nothing less this year. Highlights to follow on the blog!

Neuromechanics Weekly: How does appropriate movement diminish pain?

We talk about proper (or should we say appropriate) movement (including gait) inhibiting or diminishing pain. So, how does that happen?

Above on the left is a great diagram that we will work through.

You are looking at a cross section of a spinal cord (We can hear the groans already!) We remember that the dorsal horn (posterior part) is sensory and the ventral horn (front) is motor. In between them (the lateral horn) is autonomic (this runs automatized body functions such as your heart, lung, guts, etc).

Small nerve fibers subserve pain. These are the A delta and C nerve fibers. “Small” refers to fiber diameter of the nerve. These nerves are where pain stimuli enters the spinal cord; they enter the sensory dorsal horn and synapse/connect there with the next neuron in line that takes the sensory message up the spinal cord to the brain to tell you about the pain including its intensity, location etc. Pain can result from tissue damage or injury (which can be due to, or the result of, poor biomechanics).

Large diameter nerve fibers subserve sensations like touch, pressure, vibration, muscle spindles (muscle length) and golgi tendon organs (muscle tension/load). These fibers also enter the sensory dorsal horn, but they do not synapse immediately, unlike pain fibers. They ultimately travel up to the top of the brainstem or cerebellum to coordinate information with other data your brain is processing. They send a branch (or collateral) to an inhibitory neuron, which excites the inhibitory neuron. Thus, if you excite an inhibitory neuron, it does it’s job and inhibits the propagation of an impulse. In this case, it inhibits the pain impulse from traveling to the cortex. So pain is inhibited. Appropriate biomechanics excite the largest population of receptors and provide the most effective response. 

Now look at the diagram on the right. It is a simplified schematic of the one on the left, with detail of the connections. Note that the LARGE FIBERS (from joint mechanoreceptors, spindles, muscles, etc) EXCITE the inhibitory interneuron (which would inhibit it). Also note that the SMALL FIBERS INHIBIT the inhibitory internuron (which would excite it!)

There you have it. Clear as mud? Go through some of our old posts on receptors and FEEL THE PAIN (parts 1, 2, 3+4) and come back to this and read it again. You know you want to be a geek, so go ahead!

The Gait Guys: Geeks on many levels. helping you to presynaptically inhibit pain on a daily basis, through better movement.

You have heard us talk about weakness (short weak and tight weak) muscles all the time on Youtube: The Gait Guys; now here is the neurology behind it. Think about this concept the next time you see a gait compensation and think of the muscles (agonists/antagonists) involved.