Mechanical action, mechanical action is a basic primary role of ultrasound-specific. Ultrasonic transfer in human tissues, cells and body fluids in the body become an ultrasonic transmission medium, which allows cells to produce relative movement between cells. Thus ultrasound on the substance within the tissue and cells can produce a micro massage; role. This effect can cause changes in cell function, can cause a number of reactions of the organism. It can improve blood and lymph circulation, enhance cell membrane diffusion process to improve metabolism, enhance tissue regeneration capacity. Under the mechanical action of ultrasound, will reduce the amplitude of spinal reflex, reflex will transfer inhibition, nerve tissue bioelectric activity will be reduced, and thus the ultrasonic significant analgesic effect. The mechanical action of ultrasound also allows the connective tissue to extend hard, soft, for the treatment of scars, adhesions and crusty psychosis. Mechanical effect of ultrasound can soften tissue, enhance penetration, improve metabolism, promote blood circulation, stimulate the nervous system and cell function.
Thermal effects, ultrasound acts on the body can produce heat, ultrasonic thermal effect is in addition to the unique universal absorption, they can also selective heating, mainly in both the interface between the heat more different media, especially It is in the periosteum can produce local hyperthermia. This has great significance in the treatment of joint, ligament and other sports injuries. Thermal effects of ultrasound (uneven heating) and high-frequency and other physical factors has diffuse heat effect (uniformity of heating) different.
Physical and chemical effects, physical and chemical effects is based on the mechanical and thermal effects of ultrasound, it may be secondary to a number of physical or chemical changes. Ultrasonic mechanical vibration having physical characteristics, as well as the distribution of specific endogenous heat generated on this basis; physicochemical and biological changes inevitably caused by complex neural - humoral regulation pathways to treat disease. Nervous system response and regulation play a leading role in the mechanism of the ultrasonic treatment in.
Thus, ultrasound can treat inflammatory diseases such as frozen shoulder, arthritis, prostatitis, etc., can be pain: neuropathic pain such as low back pain, menstrual pain, and so on. Ultrasound also drug import function, these diseases have an important role in rehabilitation.
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