The act of cracked joints means bending one's joints to produce different cracking or popping sounds, often followed by feelings of satisfaction or relaxation to the person. Sometimes performed as part of a joint adjustment/mobilization is routinely performed by chiropractors, osteopaths or physical therapists.
According to traditional beliefs, popping joints, especially the knuckles, can cause arthritis and other joint problems. However, medical research has not exactly shown the relationship between hand cracking and long-term joint problems. The cracking mechanism and the resulting sound are caused by bubbles of carbon dioxide that suddenly collapse inside the joint.
Video Cracking joints
Cause
For decades, the physical mechanisms that cause cracking sounds as a result of bending, twisting, or compressing joints are uncertain. Recommended causes include:
- Establish joint air bubbles when connection is extended.
- Cavitation inside the joint - the small cavity of the partial vacuum form in the synovial fluid and then rapidly collapsing, produces a sharp sound.
- Fast ligament stretching.
- Intra-articular (in-joint) adhesion is damaged.
There are several theories to explain the breaking of joints. Cavitation synovial fluid has some evidence to support it. When spinal manipulation is performed, a given force separates the articular surface of the fully encapsulated synovial joint, which in turn creates a reduction in pressure within the joint cavity. In these low pressure environments, some of the gas dissolved in the synovial fluid (which is naturally found in all body fluids) leaves the solution, creating bubbles, or cavities, which rapidly collapse on itself, resulting in "clicking" sound. The resulting gas bubble contents are considered mainly carbon dioxide. The effect of this process will remain for a period known as the "refractory period," in which the joints can not be "re-cracked," which lasts about twenty minutes, while the gas is slowly reabsorbed into the synovial fluid. There is some evidence that ligament weakness may be associated with an increased tendency to cavity.
By 2015, research shows that bubbles remain in fluids after cracks, suggesting that cracked noises are generated when bubbles inside the joint are formed, not when it collapses. But by 2018, improved mathematical models and further experimentation and simulations show that cavitation bubbles only partially collapse during cracks, and explain that the 2015 experiment observed the smaller remaining bubbles.
Tendon tendon or scarring above excellence (as in snapping hip syndrome) can also produce a loud snapping or popping sound.
Maps Cracking joints
Effects
The general claim that cracking of the knuckles causes arthritis is not supported by evidence. A study published in 2011 examined hand radiography from 215 people (age 50-89) and compared the joints of those who regularly broke their knuckles to those who did not. The study concluded that cracked hands do not cause osteoarthritis of the hands, no matter how many years or how often someone cracks their knuckles. Previous research has also concluded that there is no greater increase of arthritis in the hands of chronic crackers; however, the usual book chips are more likely to have swollen hands and lower grip strength. Knuckle-cracking habits are associated with manual labor, nail-biting, smoking, and drinking alcohol and are advised to produce functional hand disorders. This preliminary study has been criticized for not considering the possibility of confounding factors, such as whether the ability to break a person's knuckles is related to hand disfunction rather than the cause.
Medical doctor Donald Unger broke the knuckles of his left hand every day for more than sixty years, but did not crack the knuckles of his right hand. No arthritis or other disease formed in either hand, earned him the Nobel Prize Ig in Medicine 2009, a parody of the Nobel Prize.
See also
- Crepitus - sound created by joint
References
Source of the article : Wikipedia
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