Abstract
Electromyography (EMG) is a procedure for screening patients with myopathies, and it remains the most common and the most important technique for assessing the course of these diseases over time. For a definitive diagnosis, molecular genetics and muscle biopsy are required. Fibrillation potentials, myotonic or complex repetitive discharges, positive sharp waves, and polyphasic potentials are nonspecific and can occur in both myopathic and neurogenic lesions.
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Further Reading
Fuglsang-Frederiksen A. The role of different EMG methods in evaluating myopathy (invited review). Clin Neurophysiol. 2006;117:1173–89.
Heatwole CR, Statland JM, Logigian EL. The diagnosis and treatment of myotonic disorders. Invited reviews. Muscle Nerve. 2013;47:632–48.
TM. Differential diagnosis of myotonic disorder in AANEM monograph #27, AANEM March 2008.
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Rana, A.Q., Ghouse, A.T., Govindarajan, R. (2017). Myopathy. In: Neurophysiology in Clinical Practice. In Clinical Practice. Springer, Cham. https://doi.org/10.1007/978-3-319-39342-1_20
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DOI: https://doi.org/10.1007/978-3-319-39342-1_20
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