Finger joints snap as soon as you move! Is it okay to press the knuckles of your fingers?

A lot of people like to rattle their knuckles. Don't think it's a simple thing, in fact, no single joint in a human finger can be pulled twice in five minutes. Try it yourself if you don't believe it:

Prepare a watch, first break a joint of your fingers, when you can't hear the sound, start counting the time, if within five minutes, you can make the same joint again, then you win. The rattling of the knuckles is caused by the bursting of air bubbles. There is a certain amount of fluid in the joints of the human fingers, and a small amount of gas is dissolved in the liquid.

When the finger joints are stretched, the pressure on the liquid decreases, and the gases that were originally dissolved in the liquid escape from it (this phenomenon also occurs when the cap of the soda bottle is opened). But the bubbles in the finger joints can't go anywhere else, and after about 15 minutes, the bubbles are absorbed by the fluid in the finger joints, so if you want to make your fingers sound again, you have to wait patiently for 15 minutes, and you can't do it in 5 minutes. The space in our joint capsule is filled with a bursal fluid that lubricates the joints, and the bursal fluid contains carbon dioxide.

When the joint is pulled and compressed, the connective tissue of the joint capsule changes the shape of the joint capsule due to external force, and if the pressure of the bursal fluid decreases due to the increase of the cyst cavity, the solubility of carbon dioxide in the bursal fluid decreases due to the sudden drop in pressure, and then escapes from the bursal fluid to form small bubbles. These small bubbles do not last long, because the low pressure in the bursa causes the small bubbles to burst almost immediately, causing the bursal fluid to rush into the space originally occupied by the small bubbles, thus causing the sound of joint coffee. In addition, finger snapping will make the fingers thicker because there will be some cartilage and sponge in the middle of the finger joints, and long-term finger snapping will make these cartilage and sponge swell.

Like to snap your knuckles to the point of rattling? Joint sounds**.

In movies, it is common to see scenes like this: when the two sides of the fight are preparing to fight, they often snap their fingers to show that they are strong and try to oppress each other in terms of momentum. But whether this action has an effect on the fingers has been bothering everyone.

So, is it okay to press the knuckles of your fingers?

First of all, pressing the knuckles to make a noise is a very bad habit. This kind of sound is the sound made by the joints belonging to the human body during movement, which can be mainly divided into two categories: physiological and pathological. Normally, the sound of pressing the knuckles of the fingers is physiological.

The main reason is the lack of synovial fluid in the middle of the finger joint, and the presence of cartilage tissue inside the joint, the joint here is smooth, and when the finger is pressed to put pressure on it, the increased friction will make a sound.

Under normal circumstances, this sound can only appear once in a short period of time, and if the sound still occurs after repeated compression in a short period of time, it is a symptom of the pre-metamorphosis of the joint. If you maintain this habit for a long time, it is easy to cause edema or deformation of cartilage, and over time, it will lead to premature degeneration of finger joints and bone hyperplasia in the later stage, which will lead to pain, swelling and even limited activity in the bone and joint areas.

Therefore, try not to press the finger joints too hard, and pay more attention to keeping warm to avoid catching a cold. At the same time, you can supplement some calcium tablets, which is conducive to the development of bones.

The reason for this is not very certain. One of the more popular theories is that the joints are filled with lubricating fluid and the joints are surrounded by joint capsules. When we break our fingers vigorously, the joint reaches the limit of its range of motion, and at this time, negative pressure will be generated in the joint capsule, so that the gas dissolved in the lubricating solution will quickly escape, forming small bubbles that will burst quickly, and then there will be a horn sound similar to opening champagne.

Wait for the escaping gas to dissolve back into the lubricating solution before a second sound is possible. Therefore, although the sound of the finger joints can be produced repeatedly, it cannot be repeated.

Generally speaking, people who only have a snap, do not appear red, do not feel pain, and do not have an activity disorder are physiological popping, and do not need to be treated with special treatment, and do not need to be too anxious about it. This is the case for most young people.

However, if you enjoy it and deliberately make this sound in your finger joints, it is not harmful. A long-term medical study has shown that people who deliberately snap their finger joints for a long time generally have the problem of enlarged knuckles and weakened grip. (Dr. Ke).

Like to snap your knuckles to the point of rattling? Joint sounds**.

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Finger joint rings are mainly caused by abnormal friction of cartilage in the finger joints. This condition is mostly seen in the following two reasons: First, the degeneration of the finger joints, which causes the tightening of the surrounding ligaments and joint capsule, as well as the degeneration of the internal cartilage.

When the fingers move, it causes abnormal friction of the cartilage inside, which causes the joint sounds of the fingers. 2. Seen in rheumatoid arthritis, rheumatoid arthritis mainly erodes the small joints of the hands and feet, resulting in obvious swelling and pain in the facet joints, and it is easy to lead to deformity of the facet joints in the later stage, which will also cause abnormal friction of cartilage when the finger joints are active, resulting in the appearance of finger joint sounds.

The purpose of the test is to: 1. Test the examinee's mastery of a certain aspect of knowledge or skills; 2. Check whether the examinee has the basic ability to obtain a certain qualification. Examinations are a two-way response, one is to reflect the effect of students' learning over a period of time; The second is to reflect the results of the knowledge taught by the teacher.

Students should face the exam positively, regard the exam as an opportunity to show their learning ability, put the score on the back burner, and take every question seriously. The results of the examination in which the teacher treats the student should not be judged by the results of the examination. Instead of putting too much emphasis on the scores, you should carefully analyze each question in the dismantled test paper, so that students know that they should improve and that they should continue to maintain.

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Like to snap your knuckles to the point of rattling? Joint sounds**.

87% of people believe that they will suffer from arthritis if they always pull their fingers and make their joints rattle.

Normal joint capsule.

There is a small amount of synovial fluid in it, which plays a role in lubrication and nutrition. There may be reasons for the joint ringing: (1) Gas escape: Scientists.

It is believed that between the joints of our body, this synovial fluid contains some gases such as oxygen, nitrogen and carbon dioxide.

These gases form bubbles in the synovial fluid. When we stretch our joints, the pressure in the joint capsule changes rapidly, and the gas in the joint fluid can precipitate out rapidly (a bit like when the cap of a beer bottle is opened, the pressure changes, and the gas present in the beer comes out), which can cause burping. (2) Joint displacement:

When we move the joints, the tendons.

Ligament displacement. When the tendon ligaments return to their original positions, you will sometimes hear a sound. This condition is with the knee joint.

and ankles for more. (3) Arthritis.

Rough joint contact surfaces: Arthritis destroys the cartilage tissue between the joints, causing the joint contact surfaces to no longer be smooth. In this case, the joint friction will produce a rattle.

When the joint is moving, it is possible that the joint may make a sound due to one, two, or three of the above reasons, such as between the articular surface, between the cartilage pad and the articular surface, and between the tendon and the joint capsule. In most people, this sound is not obvious, but in some people it is more clear, especially those who are sedentary, the lubrication between the joints is less, which increases the loss of joint friction, and it is easier to hear the snapping, or often make the joint move quickly (because the rapid movement of the joint can easily lead to large changes in intra-articular pressure and rapid displacement of tendons and ligaments). Generally, if there is no discomfort such as pain, it is not a big problem and can be normal, but when it is accompanied by pain or limited joint movement, it is necessary to go to the hospital to determine whether it is joint misalignment, joint damage, or arthritis.

The appearance of the pop is precisely a reminder that people should not stay in the same position for too long, but to move appropriately, it is best to get up and move a little for 15 to 30 minutes. In short, if there is no obvious persistent pain or difficulty in moving the joints, then this is normal.