1.Mechanical function: the ultrasound have the [micro massage" to the tissue substance and tiny cell. It could soften tissue, enhance penetration, improve metabolism, promote blood circulation, stimulate nerve system and cell, relief pain.
2.Heating function: it forms heat during ultrasound therapy, so it is also called as"ultrasound diathermy therapy". it is deep heating, that penetrate below the muscle. Thus, ultrasound therapy is applied to chronic soft tissue pain, arthritis, rheumatism.
3.Physical therapy function: based on the mechanical and heating function, it will trigger physical therapy.
a)Hydrogen ion concentration changes: inflammation tissue accompanied by acidosis phenomenon, the ultrasound can make the pH value changes to the alkaline, so that the symptoms are reduced, good to inflammation repair.
b)Effects on enzyme activity: ultrasound can depolymerize complex proteins into common organic molecules, affecting the activity of many enzymes.
c)Under the action of high-intensity ultrasound, many highly active free radicals can be formed in the tissue. They can accelerate the redox process in the tissue and accelerate the growth process.
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