Category Archives: Runner’s Knee

Stretching: Red Means Stop

Photograph by Natalie Harding

“If the midfoot and arch creates the first spring, the second spring in your natural shock-absorption system is your Achilles tendon–the strongest, most resilient, and elastic tendon in your body. Your achilles tendon connects your calf to your heel and can handle a ton of weight.  The achilles is essential for efficient running and forward propulsion.  Unfortunately, when you land on your heels, you lock out almost all of its abilities.”  – Excerpt from BAREFOOT RUNNING by Michael Sandler

(Biomechanics)

This is the story, before the story on stretching.

A few days ago, I received a notice in the mail–it was informing me that I didn’t stop at a red light on a street that I have driven on hundreds of times.

The upper right corner of the notice reads like this:  RED MEANS STOP

The frontal lobe of my cerebrum (my modern brain) was trying to figure out the logic in this traffic violation, that unfortunately…I don’t even remember.

It went something like this:  I must have been past the point of no return, and could not stop that quickly–maybe the light changed faster than normal that day…

It must be true; the document provided me with a image of my car *and* license plate.  I can even see two additional images and a video of my traffic violation online.

Now, whenever I’m approaching a light and the the light turns yellow–my prehistoric brain (that is identical to a lizard’s!) is screaming…RED MEANS STOP.

“With barefoot running or minimalist shoes or footwear you get everything about barefoot running except the nutrition–the stuff that actually makes barefoot running beneficial”.  – Barefoot Ken Bob Saxton

(Proprioception)

I’m going to ask you to use your occipital lobe–a underutilized section (lobe) of your cerebrum– for a moment:  Imagine that you and I heat up a small piece of hard taffy candy in the microwave–when we take out the taffy, we notice that the structure of the candy has been altered–it is no longer hard. It is actually very pliable.

If you hold one end, I can stretch it really far with very little effort.

Then both of us can grab a strand of the original strand, and stretch each of the new strands in a different direction.

By heating up the hard candy–we not only changed the structure–we also changed the function.

*That* piece of taffy will never return to its original shape.  (emphasis added)

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Runner’s Knee

“Tribology is defined as the study of the mechanisms of friction, lubrication, and wear of interacting surfaces that are in relative motion.  Based on the similarities of biomechanical and mechanical systems, the premise for insuring the efficiency and longevity of the components of the human movement system is maintaining precise movement of rotating segments.”  – Shirley A. Sahrmann, PhD, PT

(Biomechanics)

Your knee joint is a bi-axial synovial joint.

*You* and I have two invisible lines that run through our knees. They are referred to as axes in a biomechanics lab or class.

You can attend a biomechanics class at a university anywhere in the world, and the professor will tell you that you have a horizontal axis that runs from the inside of your knee to the outside of your knee, e.g., A mediolateral (fronto-horizontal) axis.

(Principles)

The other axis at your knee is vertical *and* it allows for rotation of your lower leg at the knee joint.

The same vertical axis allows for rotation of your femur at the knee joint.

At the same time that your femur is rotating at your knee joint; the other end of the bone is also rotating at your hip joint around an invisible vertical axis.

While your femur is rotating at the knee *and* the hip joint; your pelvis is also rotating on your femur at the same joint.

*All* of the motion and much more is driven by your foot as the forefoot/midfoot makes contact with planet Earth.

*Right* below your ankle joint, you have a joint that is formed by the meeting of two bones called the talus and calcaneus (heel).

Your talus sits on top of your heel and these two distinctive bones make-up the very unique *and* extremely important subtalar joint.

(Priorities)

The joints throughout your big toe (1st ray) are the only joints that are functionally more important than your subtalar joint.

If you don’t have a subtalar joint that allows for normal (natural) motion, range of motion at your knee will be limited.

A restriction in range of motion at the knee does not allow you to be an efficient shock absorber on each *and* every single leg landing.

*Running* (not walking) is a series of single leg landings.

(Proprioception)

The mechanoreceptors in and around your knee love to reach the extremes of joint motion in all three planes, e.g., Abduction of your lower leg at the knee joint.

Your knee is reacting to your foot, and your hip is responding to your knee (and foot!) .

At the same time that your pelvis (hip) is reacting to your knee, your spine is responding to motion of your pelvis, your cranium is reacting to the motion of your cervical spine, and your temporomandibular  joint (jaw) is driven by your cranium, which is resting on the top of your spine.

*Everything* is connected in more ways than one.  (emphasis added)

Asking a different question.

It is very unproductive to look at pain and degenerative changes at the knee without first exploring the mechanics of the foot *and* hip, e.g., Runners Knee.

If you limit motion throughout the support (foundation) system; you limit motion throughout the chain.

(Curiosity)

Think of it like a recipe that you are following in the kitchen:

Leave out one ingredient (a component part) and the end result is altered considerably.

(Perspective)

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Loading To Unloading: Improving Proprioceptive Feedback

A master of T’ai Chi was so sensitive to the forces around him that if a fly landed on his shoulder, he would sway gently under its impact.  Legend has it that a sparrow was unable to jump from his open palm and fly, because as it pushed away, his hand would sink beneath its legs.  Such sensitivity reflects our own potential, refined through practice.  – Excerpt from BODY MIND MASTERY by Dan Millman

Just twenty minutes from where I live, the Lovejoy (Lucas, TX) Cross Country Team runs barefoot in the grass everyday before their run.

What do they know about stretching *and* warming-up that the running magazines that are trying to reach the masses don’t know (or choose to ignore)?

(Proprioception)

Embracing and connecting to something *weird*.

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