Electrotherapy is the part of physiotherapy that deals with physical recuperation using the application of electric currents on the patient. It is also known as galvanism.
The Greeks and Romans used fish that produced electric charges to cure the sick. Nowadays there is a large number of equipment for stimulating the nerves. One of the most commonly used is TENS (Transcutaneous Electrical Nerve Stimulator), which generates electrical pulses that enter the body through electrodes.
The main effects of these currents are anti-inflammatory, analgesic, improvement of trophism, in neuromuscular strength and a heat effect (in the case of high frequency electrotherapy).
Some studies have fund improvements in patients affected by postoperative pain, arthritis and chronic muscle and joint pain. It is also applied in the case of atrophies, muscle injuries and paralysis.