A. Link to our server:
B. iTunes link:
C. Gait Guys online /download store (National Shoe Fit Certification and more !) :
D. other web based Gait Guys lectures:
www.onlinece.com type in Dr. Waerlop or Dr. Allen, ”Biomechanics”
* Today’s show notes:
1. Stem cells and plantar fasciitis.
2. Study finds axon regeneration after Schwann cell graft to injured spinal cord
3.Future Tiny Robots Will Communicate Using Only Molecules
a. I was listening to pod 49, great job. I am sending a personal message to point out an error regarding body composition. Under water weighing is considered the 2 compartment “Gold Standard” however caliper testing is used more due to cost and ability to be used in the field. Loved the learning stuff I sent some stuff similar to what you were talking about to the school administration but it went no where.
Thanks guys, Mark
b. Mark wrote: “I can see widening base of support to increase stability when one is weak but to widen base of support when one has decreased traction may increase slipping depending on width of stance couldn’t it. If decreased traction is a issue wouldn’t a better statagy”
Not very infrequently the foot tripod has been discussed. Especially the importance of the medial tripod (MT) has been of great benefit to me. Some kind of a peroneus paralysis was probably the cause of weak MT of the right foot. With a weak anterior muscle group or compartment. But what about the lateral tripod, ie the 5th distal end of the fifth metatarsal. Which muscles are most responsible for the foot stability here and what kind of exercises might be of therapeutic value? Thank you.
Gait Guys online /download store (National Shoe Fit Certification and more !) :
Dear Gait Guys,
I’ve had a problem for a while where my lower left leg whips across the midline of my body at the start of the swing phase. This happens immediately after my left foot leaves the ground and before my right foot makes contact. My left knee seems to be angled outward, and I think this is due to some sort of external rotation of the hip or femur during the the early part of my swing phase. I attached a picture to illustrate this problem in my gait. I recently came across a blog post you guys wrote (http://thegaitguys.tumblr.com/post/14262793786/gait-problem-the-solitary-externally-rotated
) and under the possibilities as to why there isn’t enough internal rotation, the second option describes exactly what happens when I run. So my question is, what can be done to correct this improper gait pattern? Thank you very much for taking the time to read this.
Between a quarter and a third of everything on the web is copied from somewhere else
What have we here?
Take a look at the tibial tuberosity and then where you think the 2nd metatarsal head would be. What do you see? The 2nd metatarsal is lateral to the tibial tuberosity. You are looking at external tibial torsion.
Lets see how this external tibail torsion behaves during a knee bend on a total gym. Observe the medial drift of the knee during weight bearing knee flexion.
In external tibial torsion there is an external torsion or a “twist” along the length of the tibia (diaphysis or long section) (need a review? click here). This occurs in this example to the degree that the ankle joint (mortise joint) can no longer cooperate with sagittal knee joint. When taking a client with external tibial torsion and pre-postioning their foot in a relatively acceptable/normal foot progression angle as seen here, there is a conflict at the knee, meaning that the knee cannot hinge forward in its usual sagittal plane. In this case with the foot progression angle smaller than what this client would posture the foot, you an see that as they bend the knee the knee is forced to drift medially and as soon as the heel is unloaded a pure “adductory twist” is noted (you can see the heel jump medially in an attempt to find a more tolerable sagittal knee bend).
Are you looking for torsions of the lower limb in your clients ?
Are you forcing them into foot postures that look better to you but that which are conflicting to your clients given body mechanics ? Remember, telling someone to turn their foot in or out because it doesn’t appear correct to your eyes can significantly impair either local or global joints , and often both. Torsions can occur in the talus, the tibia and the femur.
Furthermore, torsions can have an impact on foot posturing at foot strike and affect the limbs loading response, from foot to core and even arm swing can be altered. Letting your foot fall naturally beneath your body does not mean that you have the clean anatomy to do so without a short term or long term cost.
Want more on torsion and versions ? Type the words into the search box on our blog. We have plenty of good info for you.
Shawn and Ivo, The Gait Guys