What Are the Different Types of Joint Filler?

Joint bounce is the sound of the body's joints during exercise. Joint bounces can be divided into two categories, physiological and pathological. Pathological joint bounce is very complicated, and the etiology, pathology, treatment and prognosis can be consulted with a physical rehabilitation therapist, orthopedist.

Joint popping

The characteristics of physiological joint bounce are as follows:

1. Only occurs when the joint is suddenly pulled or flexed;

2. There must be a certain period of quiescence before the joint pops;

3 The sound is crisp, single and not repetitive;

4 It is not accompanied by pain or discomfort, and often feels relaxed after the sound.

These 4 points are the key to identify physiological joint bounces and distinguish them from pathological joint bounces. If the popping does not meet any of the above points, it is a pathological popping.

The mechanism of joint bounce

The bounce came from the joint cavity.

The joint cavity is a closed cavity. The pressure in the cavity is less than atmospheric pressure, which is usually called negative pressure. It makes the corresponding joint surfaces closely adhere to each other, and the synovial fluid is usually a latent cavity. Intraluminal negative pressure is the stability factor of the joint, and synovial fluid is the flexible factor. When the joint is at rest, the stability factor is dominant, and the flexibility factor is relatively weakened. Negative pressure forms a central region or valley region, with the lowest pressure in the valley region and higher pressure outside the valley region. When the joint is suddenly pulled or flexed, the instantaneous tensile force exceeds the auxiliary pressure in the cavity, the static balance is suddenly broken, and a temporary obvious cavity appears. Due to the sudden separation of the corresponding articular surfaces and the immediate diffusion of the surrounding gas into the obvious cavity, a crisp popping sound was issued. The popping sound is actually the vibration sound of the gas diffusion wave in the joint cavity. As a result of the gas diffusion, the pressure in the joint cavity tends to be equalized, the valley region disappears, synovial fluid dispersion increases, and joint flexibility increases.

This change can be regarded as a change in the state of balance within the joint, that is, a change from static balance to dynamic balance. This change in balance is a condition that allows muscles to relax and coordinate to complete voluntary movement. Therefore, the bounce can also be understood as the special form of the equilibrium state of the joint-the manifestation of mutation.

Clinical significance of joint bounce

1. Understanding the essence of physiological joint bounces is helpful to the overall understanding of the clinical phenomenon of joint bounces. Not all joint bounces are pathological. Not all joint bounces that occur during the practice are signs of joint reduction.

2. After the bounce, the flexibility of the joint increases. Conversely, if the flexibility of the joint cannot be fully exerted for a long time, it will lead to impairment of joint function and structural degradation. Therefore, it is beneficial and harmless to cause the joints to moderately pop.

3. The moment the physiological joint bounce occurs, the joint capsule is effectively pulled, the synovial folds are stretched, and the pressure in the joint cavity changes. These effects stimulate the capillaries and nerve endings around the joint, thereby Enhanced blood circulation and increased synovial fluid dispersion help to relieve spasm, anti-inflammatory, peel off adhesions and relieve incarceration. Therefore, joint snapping induced by massage has obvious therapeutic effect. ^[1]