What is the principle of the sound made by the human knee joint?

Frequent frictional sounds often indicate an uneven joint surface.

Normally, the adjacent articular surface is covered with a layer of articular cartilage, and the surface of the articular cartilage is very smooth, which is less than the friction coefficient of two ice surfaces. However, if the cartilage surface is worn out and is no longer smooth and flat, it will often cause a sound due to the unevenness of the adjacent articular surfaces when they move towards each other. For the majority of runners, the most common pathological sound originates from patellofemoral joint lesions, that is, due to the wear and tear of the cartilage on the connected articular surface, resulting in uneven articular surfaces, so it is manifested as friction on the cartilage surface during flexion and extension joints, squatting or going up and down stairs, resulting in continuous low blunt crepitation, often accompanied by patellar pain.

This kind of noise is often more common in daily life, but it is not common when running. This is because after a period of exercise, the secretion of synovial fluid in the joints increases, which increases joint lubrication, but if the warm-up is insufficient, the synovial fluid in the joints is not secreted in time, which will lead to joint sounds at the beginning of the exercise. At this time, runners will report knee discomfort at the beginning of running, and the discomfort will be reduced after running, which is often related to insufficient synovial fluid secretion in the joints.

Therefore, it is very important to have an adequate warm-up from the perspective of promoting synovial fluid analysis and facilitating joint lubrication. <>

Wear and tear between the joints, causing the joints to make a noise, you can eat some ammonia sugar, ammonia sugar can increase joint synovial fluid, you can use Jianli polyammonia.

Physiological snapping is generally due to the soft tissues and joints around the knee rubbing against each other during activity, there is no obvious pain symptoms or joint movement is limited, no special treatment is required, and there are many pathological snapping causes, calcification of the knee ligament, knee facet joint dislocation, knee synovitis, knee joint hyperplasia, bone spur formation, cartilage wear, subpatellar fat pad, calcification and adhesion, etc., will cause joint snapping, and accompanied by obvious pain, swelling or limited movement, which requires differential diagnosis to be symptomatic**. It is best not to make a noise in the joints when exercising.

Runners with knee injuries should also pay attention to joint sound when running, strength training or ** training, such as squatting and lunges. If the action is accompanied by a joint sound, the action should be stopped, which indicates that the pressure on the joint surface is high or the friction is obvious, and the other training action that does not cause the joint sound should be changed. It is also important to warm up well before training, as mentioned above, adequate warm-up can promote joint synovial fluid secretion, increase joint lubrication, and reduce the noise caused by uneven joint surfaces.

A sound of movement in the knee joint may indicate some kind of physical condition. Next, let's take a look at what to do if there is a sound in the knee joint movement.

01 Aging of knee joints.

As we age, the organs of the human body will gradually age, and the knee joints may also become noisy, and if the walking posture is not good, then the probability of noise will be relatively large.

02 Knee injury.

If you have an injury to your knee, you may have a noise when you walk, so you need to go to the hospital for an examination.

03 Knee ligament injury.

If the ligaments in the knee joint are damaged, it may cause the kneecap to rattle.

04 Presence or absence of pain.

If the knee joint just makes a noise and there is no pain, then there should be no problem, but if it is painful, you need to go to the hospital for examination.

(1) Knee osteoarthritis: knee osteoarthritis is more common in middle-aged and elderly people, manifested as pain, discomfort and swelling of the knee joint, and snapping in the knee joint during activity. X-rays show varying degrees of bone hyperplasia in the bone joints.

2) Meniscus injury of the knee joint: Meniscus injury is more common in young people, with a history of trauma and strenuous exercise, joint pain, weakness, strangulation (the knee joint is stuck when flexion and extension to a certain angle) and snapping. If the examiner immobilizes the affected leg with one hand and rotates the lower leg with the other hand while flexing and extending the knee, a snapping sound may occur.

In severe meniscus injury or for a long time, thigh muscle atrophy may be seen.

3) Patellomalacia: Patellomalacia is more common in middle-aged and elderly people. When the knee joint flexion and extension activities have swelling, pain and joint sounds, the symptoms are mild and sometimes severe, and all kinds of ** effects are not ideal.

During the examination, the patella is pressed with the palm of the hand, so that the patella and the femoral condyle are close together, and when the patella is rotated, the patellar surface can be felt uneven, and there is a "rustle, sound" when rubbing with the femoral condyle, and the patient has pain. Pain and discomfort may also occur when the articular surface of the inner and outer borders of the patella is pressed by hand. X-rays show uneven patellar cartilage surface, local cartilage destruction or incompleteness, cystic changes in the subchondral bone, and bone hyperplasia at the patellar margin and femoral condyle.

4) Cruciate ligament injury: Most patients with cruciate ligament injury have a history of trauma. After the injury, the knee joint continues to be painful and swollen, unable to walk or the pain worsens when walking, the joint may make a noise when the knee joint is flexed and extended, and the patient may feel the displacement movement between the bones, and the patient feels that the knee joint is unstable.

The above is the introduction of experts, I believe you have already understood, therefore, when the knee joint makes a sound or pops, it is necessary to make a comprehensive judgment based on age, trauma history, clinical characteristics and X-ray examination to find out the exact cause. Here's wishing you all good health and a speedy day for patients.

Keep as warm as possible, you can use a warm compress; The second is to reduce the amount of exercise and let the joints rest. If the above methods do not improve the knee pain, then it is necessary to go to the hospital for a clear **. Suggestions:

Considering that it is patellar overload, it is recommended to check the axial image of the patella to make a clear diagnosis, and if the diagnosis can be confirmed, it is still according to the guidanceLook for blast ointment, sales paste, good holdings.

Analysis: Hello from your MRI results, consider that you may have knee arthritis.

Suggestions: Generally speaking, it is recommended that you should check the rheumatism immune antibody and blood routine and synovial fluid examination to see if it is autoimmune arthritisEat more vegetables and fruits, you can wipe the blast cream locally, and slowly strengthen the exercise.

The starting point should be prevention....If it is aseptic inflammation caused by friction or meniscus and other factors in the knee joint, patients can have joint spasm, instability, obvious swelling of the joint accompanied by fluid accumulation, continuous joint pain, if not carried out in time, the joint will gradually ossify, calcify, and eventually lose its normal function.

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Targeted workouts often require assistive equipment such as punching bags, training balls, elastic bands, etc. Before muscle strength training, it is best to let a professional ** professional conduct a clinical assessment of knee joint function, and use a professional scale to analyze the degree of functional impairment to determine whether it is suitable for muscle strength trainingIn addition to the above, Seeking Lonely Wind Ointment has a benign effect on osteoarthritis

Proper aerobic exercise (such as jogging, walking, swimming, tai chi, etc.) can not only improve cardiopulmonary circulation, effectively increase aerobic capacity, reduce fatigue and enhance immunity, and improve depression and anxiety

1. Arthritis development. Some people have inflammation, local wear, degeneration, and usually make special sounds during the activity.

2. Osteohyperplasia.

If you notice a special sound in your joints, it may be related to osteohyperplasia.

3. Poor knee joint development.

The appearance of special sounds in the knee joint is related to developmental instability, which is more common in adolescents, and there will be obvious sounds during physical exercise.

4. Meniscus injury. Many people like to exercise, but they do not pay attention to the intensity control during exercise, they may accidentally damage the bones, and finally have meniscus health problems, in the process of activity, they will also make special sounds, and there are many painful symptoms, and severe meniscus injuries need to be treated with surgery.

It is likely that there is a meniscus injury, it may be caused by bone hyperplasia in the joints, it may be caused by patellar osteoarthritis, it may be caused by knee instability, and it may be due to a lack of exercise and exercise, so there will be such a sound.

It may be that the knee joint is unstable, the patella is inflamed, the meniscus is damaged, the knee joint has bone hyperplasia, calcium deficiency, and the knee joint lubricating oil becomes less will cause the knee joint to make a sound.

Arthritis, osteohyperplasia, knee dysplasia, calcium deficiency, osteoporosis, these 4 factors will cause the knee joint to make a loud sound.

It may be a problem with arthritis, or there is bone growth and knee dysplasia. It may also be the presence of a meniscus injury.