Deficient muscle activation in patients with Complex Regional Pain Syndrome and abnormal hand postures: An electromyographic evaluation

Highlights • Abnormal hand postures in chronic Complex Regional Pain Syndrome (CRPS) are not characterized by sustained muscle contractions, and limitations of the active range of motion are not attributable to excessive co-contraction. • Although the presentation may resemble that of dystonia, thes...

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Veröffentlicht in:Clinical neurophysiology 2013-10, Vol.124 (10), p.2025-2035
Hauptverfasser: Bank, Paulina J.M, Peper, C. (Lieke) E, Marinus, Johan, Beek, Peter J, van Hilten, Jacobus J
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Sprache:eng
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Zusammenfassung:Highlights • Abnormal hand postures in chronic Complex Regional Pain Syndrome (CRPS) are not characterized by sustained muscle contractions, and limitations of the active range of motion are not attributable to excessive co-contraction. • Although the presentation may resemble that of dystonia, these motor impairments in chronic CRPS patients are not associated with excessive muscle activity and hence do not exhibit the characteristics typical of dystonia. • Structural alterations in skeletal muscle tissue and pain-induced adaptations of motor function may contribute to a substantial loss of voluntary modulation of muscle activity.
ISSN:1388-2457
1872-8952
DOI:10.1016/j.clinph.2013.03.029