Journal of neurology, neurosurgery, and psychiatry · 2004
Factors predicting improvement in motor disability in writer's cramp treated with botulinum toxin.
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Djebbari R, du Montcel S T, Sangla S, Vidal J S, Gallouedec G, Vidailhet M
Аннотация
OBJECTIVE: To identify factors predicting improvement in motor disability in writer's cramp treated with botulinum toxin (BTX).
METHODS: 47 patients with writer's cramp were treated with BTX and were evaluated by the same neurologists at initial referral, after each BTX injection, and when the effect of BTX was maximal at the time of the study. Patients and examiners simultaneously and independently rated the efficacy of BTX injections. Self assessment was a global clinical impression of the impact of treatment on writing quality, writing speed, writing errors, and legibility of handwriting; for objective assessment, the examiners used the Burke-Fahn-Marsden (BFM) scale.
RESULTS: On the BFM scale, there was a significant improvement (p<0.0001) in both severity and disability scores. Patients with a pronation/flexion pattern of dystonia showed the best and the most sustained improvement. Primary writing tremor was little improved. There was a correlation between the self assessment score and the Burke-Fahn-Marsden score. Benefit was maintained over time
CONCLUSIONS: These results have implications for the identification of patients most likely to benefit from BTX injections.
METHODS: 47 patients with writer's cramp were treated with BTX and were evaluated by the same neurologists at initial referral, after each BTX injection, and when the effect of BTX was maximal at the time of the study. Patients and examiners simultaneously and independently rated the efficacy of BTX injections. Self assessment was a global clinical impression of the impact of treatment on writing quality, writing speed, writing errors, and legibility of handwriting; for objective assessment, the examiners used the Burke-Fahn-Marsden (BFM) scale.
RESULTS: On the BFM scale, there was a significant improvement (p<0.0001) in both severity and disability scores. Patients with a pronation/flexion pattern of dystonia showed the best and the most sustained improvement. Primary writing tremor was little improved. There was a correlation between the self assessment score and the Burke-Fahn-Marsden score. Benefit was maintained over time
CONCLUSIONS: These results have implications for the identification of patients most likely to benefit from BTX injections.