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In this issue, Fridman et al1 (see page 423) report an improvement of the active motor function of the upper limb, due to botulinum toxin injections (BTX) in eight patients, more than 1 year after a stroke The experimental task consisted in reaching, grabbing and transporting an object. Performance was analysed by a movement analysis system allowing the measure of peak velocity, distance and time. Examining patients before and 1 month after BTX injection, a significant reduction could be observed for the duration of each phase of the movement.
The efficacy of BTX in lowering spastic hypertonia has been widely demonstrated since the first papers …