Biomechanics help!

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I am having trouble with biomechanics and have decided to practice using case studies. I've come across a case study where a guy is Inverted in NCSP and everted during RCSP. What does this mean in practical terms and what is the significance of this finding?

 

There is no significance to this finding. Over 99% of people are more inverted in NSCP than RCSP. (Based on a sample size of 30, where 100% of RCSP were everted from neutral and 20+ years of clinical biomechanics practice. I have seen a couple of people stand in neutral position.)

If you want to be that annoying student you could ask your instructors a few questions. What is the accuracy of heel bisection? Why it is good to have a vertical heel? Why is it bad to have an everted heel? Is a 2 degree everted heel a problem if the accuracy of the measurement is +/- 3 degrees? If they answer those questions with things like, " it's more stable." Follow up with why is it more stable? You won't learn enough if you don't ask questions.

There is something to biomechanics and orthotics do work. However, on close examination the use of RCSP and NCSP doesn't really explain why they work. I used to teach that stuff, but had to abandon it when it didn't make enough sense. I now believe in the tissue stress approach to biomechanics.

Eric