If Only One Shoulder Keeps Seizing Up
The short answer
Why does one shoulder keep tightening after it is released? Repeated one-sided habits and postural compensation can keep loading the same tissues.
Contents
"It's always the right one. The left is fine."
Many people say this. And they usually add one more thing. "It eases after it's worked on, then within days it's back."
That the two come together is the clue.
Why that side
The body doesn't use its two sides equally. The side you carry the bag on, the side you lean on, the side that holds the mouse, the side you take calls on — hundreds of times a day, the same side works a little more.
One time is nothing. The trouble is when that little difference stacks up over years. Tissue on the side used more has spent longer under tension, and tissue held under tension for long enough thickens to fit.
So the place that seizes up is often not the weak side but the side that has been holding out.
Stiff tissue can give on its own
Here is the interesting part.
Muscle has a property: leave it and it goes thick; move it well and it softens. Thixotropy. (Chuna without cracking — how thixotropic chuna works)
Thick doesn't mean the tissue is damaged. It has simply settled into its present state. What has settled can be unsettled.
So why is it back within days?
This is the heart of it.
A released state doesn't hold itself. Thixotropy is that sort of property — softens with stimulus, thickens again when left.
So a released shoulder coming back a few days later doesn't mean the treatment failed. The tissue is built that way — and more to the point, the day that stiffened that shoulder is unchanged.
Same side carries the bag, same posture sits, same arm works. Release it and that day stiffens it again.
So I don't look only at the shoulder
Release only the seizing shoulder and you get a few days. Look together at the structure sending it the load and those few days stretch.
The body is stacked in layers. When what's below settles to one side, the shoulder above works continuously to keep the balance. That shoulder isn't seizing because it is idle. It seizes because it is doing more than its share.
So after releasing the sore place I look for what has been sending it work. And we set posture and movement together so that the released state lasts longer. (If your adjustment keeps coming undone — maintenance is half the treatment)
One shoulder seizing isn't that shoulder's fault. It is years of habit stacked on one side.
It took years to stack, so it takes a few goes to unstack. But get the direction right and the interval before it returns keeps widening.
References
- A muscle given stimulus shows less resistance, and stiffens again with rest — confirmed in human wrists — Journal of Physiology, 2001
Written by Dr. Heo Ji-young (PhD in Korean Medicine Pathology, Kyung Hee University · former Research Professor of Herbology, Kyung Hee University)
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