HIV Foundation Health Bad habit or dangerous? That’s why it cracks when we pull our fingers

Bad habit or dangerous? That’s why it cracks when we pull our fingers

Crack, Crack, Crack: Some people can pull their fingers apart so that it makes quite loud noises. Scientists wanted to know where this pop is coming from. 

  • So far there have been various theories about the origin of noise.
  • Researchers observed the process in the magnetic resonance tomograph.
  • There is no indication of whether the cracking is bad or good for the joints.

The cracking noise when pulling apart of fingers formed according to a study by the formation of a cavity in the joint.

Finger in the magnetic resonance tomograph

In the investigation, Greg Kawchuk’s team from the University of Alberta in Edmonton, Canada, took a closer look at a man’s metacarpophalangeal joints in an MRI scanner. The scientists present their results in the journal “PLOS ONE” .

Is there a threat to health?

Some people can crack their joints when they pull their fingers apart. There is currently no evidence as to whether this phenomenon is bad or good for the joints. “So far, no one has ever been able to prove that this  cracking is harmful to health in the long term,” says Professor Jörg van Schoonhoven from the Clinic for Hand Surgery at the Rhön Clinic in Bad Neustadt an der Saale.

Different theories

For a long time there have been various theories about where the popping sound when clicking your fingers comes from. Some scientists suspected that the crackling sound was caused by a bursting bubble in the joint space.

Other researchers hypothesized that the sound is caused by the flapping of ligaments.

Another explanation for the origin of the cracking is what is known as tribonucleation: a mechanism in which the movement of surfaces creates gas bubbles in a liquid.

Study author as guinea pig

To date, there has not been any direct experimental evidence that solidly supports any of the theories. Kawchuk’s researchers wanted to change that. 

For their study, the scientists needed someone who had the ability to crack their metatarsophalangeal joints on request. These joints connect the bones of the metacarpus to the base members of the fingers. The choice fell on Jerome Fryer, one of the study authors.

Pull until it cracks

In the experiment, the researchers examined each finger of the test subject in isolation in a special magnetic resonance tomograph, with which movement sequences can be recorded.

The finger was attached to a kind of tube that was connected to a cable at the other end. Then the cord was pulled until Fryer’s fingers cracked. The entire process in the joint was recorded with an MRI scanner.

Is a cavity the cause?

Shortly before the cracking could be heard, the researchers were able to observe the formation of a cavity in the images.

The scientists therefore assume that tribonucleation has taken place in the joint: “It is a bit as if a vacuum is being formed,” explains Kawchuk in a communication on the study. “If the joint surfaces suddenly separate, there is no longer any liquid left to fill the increasing joint volume. This creates a cavity.” The noise is generated by this event. 

“It is interesting to know what acoustic phenomenon is behind the cracking of the fingers,” said the hand surgeon van Schoonhoven. However, by including only one person in their study, Kawchuk’s researchers would be able to explain the phenomenon only for that person. “The experimental setup does not allow any generalized statements,” said van Schoonhoven.

 

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Yоu Cаn Afford Tо Pay Higher Premiums

Thе premiums саn bе higher whеn compared wіth individual health policies, thе premiums аrе based оn thе carrier considering thе fact thаt thеу аrе covering people wіth pre-existing conditions. Yоu wіll bе paying аn average оf $660/month fоr a 50-something year old non-smoker (in states whеrе thе federal government іѕ running thе pools), whісh іѕ nоt affordable fоr еvеrуоnе.

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Fоr thе mоѕt раrt, іn order tо qualify fоr coverage іn оnе оf thе risk pools, a person hаѕ tо hаvе bееn uninsured fоr аt lеаѕt ѕіx months. Thіѕ wаѕ created tо kеер people frоm switching оff оf оthеr coverage (including existing high risk pools) аnd thеn jacking uр thе new pools wіth members. Fоr thоѕе whо hаvе conditions аnd hаvе bееn uninsured fоr ѕеvеrаl months аftеr exhausting COBRA оr аftеr аn employer goes оut оf business аnd stops offering health insurance аll tоgеthеr, a high-risk health plan wіll likely bе a good fit fоr уоu.

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Thank уоu fоr reading, I hope thіѕ wаѕ helpful!

Still muscles at 70 like at 30? Doctor will explain how to do itStill muscles at 70 like at 30? Doctor will explain how to do it

Older people often do not do sports. However, this is exactly the wrong way to protect the joints. Because especially after a certain age, the muscles break down rapidly. That can be dangerous. But with simple training you can maintain your strength well into old age.

If you rest, you rust. There is a lot of truth in this banal wisdom – especially when it comes to muscles and joints. Those who are young have often integrated sport into everyday life as a matter of course. But with age, people often give up. That is fatal.

Because it is precisely at the age of three that there is a significant drop in performance, explains Karl-Dieter Heller, chief physician at the Orthopedic Clinic Duchess Elisabeth Hospital. The muscles begin to break down. Right here it is called to hold against.

The orthopedic surgeon is certain: “With good training, even as a 70-year-old, I can still have the muscles of a moderately trained 30-year-old. Because the healthy old person reacts to stimuli just like the healthy young person. “

If you don’t do anything, you lose your muscles. But: It can also be trained back quickly.

Muscles break down rapidly

From the age of 55 the muscles break down faster than before, from the age of 70 very quickly. “That means that by the age of 70, around 40 percent of muscle mass is lost if you do nothing,” explains Heller. Consequently, people lose strength, endurance and speed. A lack of mobility, coordination and balance increases the risk of falling.

That’s how much sport people should do in old age

An optimal exercise program in old age would be a combination of 60 percent endurance training , 30 percent training in flexibility and agility and 10 percent strength and endurance training (a combination of strength and endurance that trains the various muscle groups with little weight and a lot of repetitions.

“The prerequisite for intensive sporting activity is of course that it is safe for the doctor to stress the circulatory system,” adds the joint expert. The pulse should not exceed certain limits. This is especially true for the untrained.

Endurance training has the greatest health effect : 45 minutes three times a week. As a result, everyone slowly but continuously builds up muscles. If you want to supplement this with strength training, make sure that you do not fall into pressure breathing.

For muscle building Heller recommends an exercise program. Flexibility training is important to keep the joints flexible. For example, do swing, twist, or pendulum exercises three times a day for 15 minutes. The coordination can be trained through games, dancing or similar sports.

Nobody is too old to train

The skeletal muscles can be trained at any age, so that specific exercises can stop and reverse the loss of muscles. Heller knows experiments that have shown: Even those older than 90 can build up muscles again – even if they no longer achieve the status of a 50-year-old.

“It is essential that the elderly remain active,” emphasizes the orthopedic surgeon. Regular exercise is no longer essential, but everyone should exercise.

At least avoid these inactivity traps, like

  • Escalators,
  • Elevators and
  • Treadmills.

Instead:

  • Better to go shopping on foot.
  • Use your bike instead of driving your car.
  • Practice demanding hobbies: hiking, swimming, dancing and gardening.

“That is what every old person can do excellently and he should do without technical aids,” explains Heller. If at all possible, the lawn mower should be pushed and it does not have to be a ride-on mower.

Strengthen muscles and joints to prevent falls

Sport and exercise in old age not only keep you fit, but also make a decisive contribution to falling prevention. Because older people in particular often fall down. On the one hand, this is due to the fact that your joints are no longer as stable. On the other hand, the muscles lose their strength.

When that all comes together and people also see and hear worse, it becomes dangerous. That means, according to Heller: “For this reason, training and sport are of inestimable value, especially for stopping aging.”