Electrotherapy is the use of
electrical energy as a medical treatment.[1] In
medicine, the term electrotherapy can apply to a variety of treatments, including the use of electrical devices such as
deep brain stimulators for neurological disease. The term has also been applied specifically to the use of electric current to speed wound healing. Additionally, the term "electrotherapy" or "electromagnetic therapy" has also been applied to a range of
alternative medical devices and treatments.
Medical uses
Electrotherapy is primarily used in physical therapy for:
Some of the treatment effectiveness mechanisms are little understood, with effectiveness and best practices for their use still anecdotal.
Musculoskeletal conditions
In general, there is little evidence that electrotherapy is effective in the management of musculoskeletal conditions.[3]
In particular, there is no evidence that electrotherapy is effective in the relief of pain arising from
osteoarthritis,[4]
and little to no evidence available to support electrotherapy for the management of
fibromyalgia.[5]
Neck and back pain
A 2016 review found that, "in evidence of no effectiveness," clinicians should not offer electrotherapy for the treatment of
neck pain or associated disorders.[6]
Earlier reviews found that no conclusions could be drawn about the effectiveness of electrotherapy for neck pain,[7]
and that electrotherapy has limited effect on neck pain as measured by clinical results.[8]
A 2015 review found that the evidence for electrotherapy in pregnancy-related lower
back pain is "very limited".[9]
Shoulder disorders
A 2014
Cochrane review found insufficient evidence to determine whether electrotherapy was better than exercise at treating
adhesive capsulitis.[10]
As of 2004, there is insufficient evidence to draw conclusions about any intervention for
rotator cuff pathology, including electrotherapy;[11]
furthermore, methodological problems precluded drawing conclusions about the efficacy of any rehabilitation method for
impingement syndrome.[12]
Other musculoskeletal disorders
There is limited, low quality evidence for a slight benefit of noxious-level electrotherapy in the treatment of
epicondylitis.
[13]
A 2012 review found that "Small, single studies showed that some electrotherapy modalities may be beneficial" in rehabilitating ankle
bone fractures.
[14] However, a 2008 review found it to be ineffective in healing long-bone fractures.[15]
A 2012 review found that evidence that electrotherapy contributes to recovery from knee conditions is of "limited quality".
[16]
Chronic pain
A 2016 Cochrane review found that supporting evidence for electrotherapy as a treatment for
complex regional pain syndrome is "absent or unclear."[17]
Chronic wounds
A 2015 review found that the evidence supporting the use of electrotherapy in healing
pressure ulcers was of low quality,[18] and a 2015 Cochrane review found that no evidence that electromagnetic therapy, a subset of electrotherapy, was effective in healing pressure ulcers.[19] Earlier reviews found that, because of low-quality evidence, it was unclear whether electrotherapy increases healing rates of pressure ulcers.[20][21] By 2014 the evidence supported electrotherapy's efficacy for ulcer healing.[22]
Another 2015 Cochrane review found no evidence supporting the user of electrotherapy for
venous stasis ulcers.[23]
Mental health and mood disorders
Since the 1950s, over 150 published articles have found a positive outcome in using
cranial electrostimulation (CES) to treat depression, anxiety, and insomnia.[24]
Contraindications
Electrotherapy is contraindicated for people with:[25][26]
The first recorded treatment of a patient by electricity was by Johann Gottlob Krüger in 1743.
John Wesley promoted electrical treatment as a universal panacea in 1747 but was rejected by mainstream medicine.
Giovanni Aldini treated insanity with static electricity 1823–1824.[27]
The first recorded medical treatments with electricity in London were in 1767 at
Middlesex Hospital in London using a special apparatus. The same apparatus was purchased for
St. Bartholomew's Hospital ten years later.
Guy's Hospital has a published list of cases from the early 19th century.[28]Golding Bird at Guy's brought electrotherapy into the mainstream in the mid-19th century.[29] In the second half of the 19th century the emphasis moved from delivering large shocks to the whole body to more measured doses, the
minimum effective.[27]
Apparatus
Electrotherapy equipment has historically included:
In 1856
Guillaume Duchenne announced that
alternating was superior to
direct current for electrotherapeutic triggering of muscle contractions.[30] What he called the 'warming effect' of direct currents irritated the skin, since, at voltage strengths needed for muscle contractions, they cause the skin to blister (at the
anode) and pit (at the
cathode). Furthermore, with DC each contraction required the current to be stopped and restarted. Moreover, alternating current could produce strong muscle contractions regardless of the condition of the muscle, whereas DC-induced contractions were strong if the muscle was strong, and weak if the muscle was weak.
Since that time almost all rehabilitation involving muscle contraction has been done with a symmetrical rectangular biphasic waveform. During the 1940s, however, the
U.S. War Department, investigating the application of electrical stimulation not just to retard and prevent atrophy but to restore muscle mass and strength, employed what was termed galvanic exercise on the atrophied hands of patients who had an ulnar nerve lesion from surgery upon a wound.[30] These galvanic exercises employed a monophasic (single-pulse) direct current waveform.
^Institute of Electrical and Electronics Engineers, "The IEEE standard dictionary of electrical and electronics terms". 6th ed. New York, Institute of Electrical and Electronics Engineers, c1997. IEEE Std 100-1996.
ISBN1-55937-833-6 [ed. Standards Coordinating Committee 10, Terms and Definitions; Jane Radatz, (chair)]
^Côté P, Wong JJ, Sutton D, Shearer HM, Mior S, Randhawa K, Ameis A, Carroll LJ, Nordin M, Yu H, Lindsay GM, Southerst D, Varatharajan S, Jacobs C, Stupar M, Taylor-Vaisey A, van der Velde G, Gross DP, Brison RJ, Paulden M, Ammendolia C, David Cassidy J, Loisel P, Marshall S, Bohay RN, Stapleton J, Lacerte M, Krahn M, Salhany R (2016). "Management of neck pain and associated disorders: A clinical practice guideline from the Ontario Protocol for Traffic Injury Management (OPTIMa) Collaboration". European Spine Journal. 25 (7): 2000–2022.
doi:
10.1007/s00586-016-4467-7.
PMID26984876.
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^Mollon B, da Silva V, Busse JW, Einhorn TA, Bhandari M (November 2008). "Electrical stimulation for long-bone fracture-healing: a meta-analysis of randomized controlled trials". The Journal of Bone and Joint Surgery. American Volume. 90 (11): 2322–2330.
doi:
10.2106/JBJS.H.00111.
PMID18978400.
^Button K, Iqbal AS, Letchford RH, van Deursen RW (2012). "Clinical effectiveness of knee rehabilitation techniques and implications for a self-care treatment model". Physiotherapy. 98 (4): 288–299.
doi:
10.1016/j.physio.2011.08.003.
PMID23122433.
^Barnes R, Shahin Y, Gohil R, Chetter I (April 2014). "Electrical stimulation vs. standard care for chronic ulcer healing: a systematic review and meta-analysis of randomised controlled trials". European Journal of Clinical Investigation. 44 (4): 429–440.
doi:
10.1111/eci.12244.
PMID24456185.
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abChalovich JM (23 January 2012). Franklinization: Early Therapeutic Use of Static Electricity.
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^Steavenson, William Edward (1892).
Medical electricity. Philadelphia: P. Blakiston, Son & Company. pp.
3–4.
^Morus IR (1998). Frankenstein's Children: Electricity, Exhibition, and Experiment in Early-nineteenth-century London. Princeton University Press. pp. 234–237.
ISBN978-0-691-05952-5.
^
abLicht S (1967). "History of Electrotherapy". Therapeutic electricity and ultraviolet radiation. Waverly. pp. 1–70.
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