Abstract
In China, the majority of osteoarthritis patients have the disease in the knee. Clinically, knee osteoarthritis (KOA) often has joint swelling, pain, stiffness, dysfunction and other symptoms, which reduce the patients’ quality of life. There is a trend that osteoarthritis affects more and more young people in China, so it is much more important to treat KOA. Being a cheap and non-surgical option, the transcutaneous electrical nerve stimulation (TENS) has unique advantages in dealing with the pain caused by KOA. This article presents the pathogenesis and pain mechanism of KOA, describes the mechanism of TENS in KOA treatment, discusses the advantages and disadvantages, and proposes some combined treatment methods. Some studies have shown that the pathogenesis of KOA is related to the theory of unequal settlement of knee joints, and the pain comes from cartilage, subchondral bone and synovial membrane lesions. The gate control theory, endogenous opioid peptide release theory and diffuse noxious inhibitory controls theory are considered as the theoretical basis for TENS to inhibit pain. Its effectiveness, adaptability and incidence of adverse reactions are better than using drugs, but it cannot improve walking ability and the range of motion of the joints. Combination therapies of TENS are currently effective for treating KOA, including TENS combined with ultrasound, sodium hyaluronate, massage, functional training and other treatment options.
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