Need to study the pressure on the knee joint due to High heels wearing

I need to study the pressure on the knee joint caused by wearing high heels, so that the higher the heel and the smaller its sectional area, the greater the pressure.. This previous part seems easy, but I don’t know how to relate this to the knee joint specifically and not the pressure in general, I need to change that the output to change as I am changing the input and also the outputmust include a graph.

[Walter Roberson]

This is an algorithm question, not a question about matlab

[Nathan Hardenberg]

Isn't the knee pressure independent from the type of shoe you are wearing?

Because pressure

and the force in your leg and the size of your knee joint are contant (or at least independent on how you walk). What changes is the force/pressure on your toes and middle foot.

There are likely other effects (My guess: higher impulse due to hard shoe surface), but they are not easy to calculate, since real world data would be needed.

But regarding your question: here is a way to plot a graph depending on a given formula (with one variable)

syms F A  % define symbols

p = F/A

p = 

% set A to a constant 1.1
p_new = subs(p, A, 1.1);

fplot(p_new)

[Walter Roberson]

the force in your leg and the size of your knee joint are contant

I question that. If you alter the angle of the foot then the angle of the lower leg will be different, and that would lead to different portions of the knee joint being subject to the force. The knee is not an idealized point-like sphere; it is round-ish but not spherical, so forces would be distributed differently depending on the angle.

John Cleese famously had to give up performing The Ministry Of Silly Walks because he was blowing out his knees from walking with his legs at different angles.

[Nathan Hardenberg]

@Walter Roberson what you say is plausible! And I do think that wearing high heels is bad for your joints and knees.

But the force needed to be supported is roughly the same regardless of shoes (assuming static). That means the supported force of the knee has to be the same aswell. Most likely the force will spread on different parts of the joint for different angles, as you say. But @Zainab Yaqoub Alkhalifah talks about "the higher the heel and the smaller its sectional area, the greater the pressure", and follow up saying this would be "easy". This seemed to me at least that they were refering to p=F/A.

When assuming a dynamic walk the problem gets even harder, and more complicated. From my knowlege (still not a biologist) harder impacts are most/very damagig for joints. But calculating the pressure in the joint regions would mostly not help either, since you would have to know which parts of the joint are the once likly to "fail".

[Image Analyst]

@Zainab Yaqoub Alkhalifah sounds like you probably have some input and output data (pressure, heel height, cross sectional area) but you forgot to attach it. Then we can show you how to use plot to make a graph of the data. Or you can invest 2 hours here and do it yourself:

MATLAB Academy - Free 2 hour training

If you have any more questions, then attach your data and code to read it in with the paperclip icon after you read this:

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