The dumbbell is lifted horizontally, and the shoulder rings badly. What happened?
◆ Gas escapes. There is joint fluid in the joint, which plays a lubricating role. There are oxygen, nitrogen and carbon dioxide in the joint fluid. When the joint is squeezed, after the joint capsule expands and contracts, the gas is released quickly, forming bubbles and noises. This mechanism prevents the joint from being squeezed again, because the gas cannot be squeezed again until it returns to the joint fluid.
◆ Activities of joints, tendons and ligaments. When moving, if the posture and position are wrong, there will be noise. This is also a reminder that the position is wrong.
◆ Rough surface. After arthritis, a rough surface appears because of the loss of smooth cartilage, and there will be noise when rubbing.
The former is physiological joint noise, and the latter is abnormal, but the reason for the increase of age is not morbid.
These are objective phenomena, joint ringing and subjective phenomena, because some people especially like to pinch their fingers and make crunching noises. So it has long been said that doing so will lead to arthritis. However, there is no evidence to support it. 20 1 1 a study compares the knuckles of people who squeeze joints with those who don't, and draws the conclusion that no matter how many years and times they squeeze, it will not lead to phalangeal osteoarthritis. The results of other studies are also consistent.
There is a doctor named Donald unger who has been pinching the knuckles of his left hand with his right hand every day for 60 years. Therefore, there are no adverse consequences. So he did experiments with his own hands for such a long time and won the Ig Nobel Prize in Medicine in 2009.
In general, joint ringing is normal and nothing happens. No matter what causes it, joint noise itself does not need treatment, because there will be no problems with joint noise in the future, and there is no special exercise or supplement to prevent joint noise.
What is really noteworthy is that when the joint rings, there is pain at the same time, or the joint ring is accompanied by swelling. Both cases need to see a doctor, especially the knee joint.
There are two possibilities for knee pain when it rings:
◆ meniscus tear. It mainly happens to young people, especially sports injuries.
◆ Cartilage damage or wear. Wear mainly occurs in middle-aged and elderly people, and the most serious is osteoporosis.
Cartilage wear is inevitable with age, and the lack of articulation sounds is worrying. What is worth worrying about is the health of the knee, because osteoporosis cannot be treated and can only be prevented.
The health of the knee joint first depends on exercise, at least twice a week, to make the knee and legs strong, especially the muscles that support the knee. You should warm up and do stretching exercises first, and don't be too intense at first. Sports shoes should also be followed and replaced regularly, because the shoes themselves are worn. The second and more important thing is to keep a healthy weight, because overweight and obesity are the main risk factors of osteoporosis.
As long as it doesn't hurt or swell, don't worry about joint ringing.