Sensorimotor retuning [corrected] in complex regional pain

Annals of neurology · Mar 2005

Comparative Study Clinical Trial

Sensorimotor retuning [corrected] in complex regional pain syndrome parallels pain reduction.

Patients with complex regional pain syndrome (CRPS) and intractable pain showed a shrinkage of cortical maps on primary (SI) and secondary somatosensory cortex (SII) contralateral to the affected limb. This was paralleled by an impairment of the two-point discrimination thresholds. Behavioral treatment over 1 to 6 months consisting of graded sensorimotor retuning led to a persistent decrease in pain intensity, which was accompanied by a restoration of the impaired tactile discrimination and regaining of cortical map size in contralateral SI and SII. This suggests that the reversal of tactile impairment and cortical reorganization in CRPS is associated with a decrease in pain.

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- Burkhard Pleger, Martin Tegenthoff, Patrick Ragert, Ann-Freya Förster, Hubert R Dinse, Peter Schwenkreis, Volkmar Nicolas, and Christoph Maier.
- Department of Neurology, BG-Kliniken Bergmannsheil, Ruhr-University Bochum, Buerkle-de-la-Camp-Platz 1, DD-47789 Bochum, Germany.
- Ann. Neurol. 2005 Mar 1;57(3):425-9.
AbstractPatients with complex regional pain syndrome (CRPS) and intractable pain showed a shrinkage of cortical maps on primary (SI) and secondary somatosensory cortex (SII) contralateral to the affected limb. This was paralleled by an impairment of the two-point discrimination thresholds. Behavioral treatment over 1 to 6 months consisting of graded sensorimotor retuning led to a persistent decrease in pain intensity, which was accompanied by a restoration of the impaired tactile discrimination and regaining of cortical map size in contralateral SI and SII. This suggests that the reversal of tactile impairment and cortical reorganization in CRPS is associated with a decrease in pain.

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Sensorimotor retuning [corrected] in complex regional pain syndrome parallels pain reduction.

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