Cracking joints

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Published on December 10, 2021 9:52:44 AM ● Video Link: https://www.youtube.com/watch?v=w-3E2L125C4

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Cracking joints, by Wikipedia https://en.wikipedia.org/wiki?curid=7042 / CC BY SA 3.0

#Habits
#Joints
Cracking finger joints makes a distinct cracking or popping sound.
Cracking joints is manipulating one's joints to produce a distinct cracking or popping sound.
It is sometimes performed by physical therapists, chiropractors, osteopaths, and masseurs in Turkish baths.
The cracking of joints, especially knuckles, was long believed to lead to arthritis and other joint problems.
However, this is not supported by medical research.
The cracking mechanism and the resulting sound is caused by carbon dioxide cavitation bubbles suddenly partially collapsing inside the joints.
To be able to crack the same knuckle again requires waiting about 15 minutes before the bubbles will be able to form again.
Play media MRI of a cracking finger joint, visualizing cavitation.
For many decades, the physical mechanism that causes the cracking sound as a result of bending, twisting, or compressing joints was uncertain.
Suggested causes included: There were several hypotheses to explain the cracking of joints.
Synovial fluid cavitation has some evidence to support it.
When a spinal manipulation is performed, the applied force separates the articular surfaces of a fully encapsulated synovial joint, which in turn creates a reduction in pressure within the joint cavity.
In this low-pressure environment, some of the gases that are dissolved in the synovial fluid （which are naturally found in all bodily fluids） leave the solution,
making a bubble, or cavity, which rapidly collapses upon itself, resulting in a "clicking" sound.
The contents of the resultant gas bubble are thought to be mainly carbon dioxide, oxygen and nitrogen.
The effects of this process will remain for a period of time known as the "refractory period", during which the joint cannot be "re-cracked", which lasts about twenty minutes, while the gases are slowly reabsorbed into the synovial fluid.
There is some evidence that ligam...