Daily Vibrotactile Stimulation Exhibits Equal or Greater Spasticity Relief Than Botulinum Toxin in Stroke.
Caitlyn Seim, Bingxian Chen, Chuzhang Han and 4 others
PMID 37149017WHAT IT FOUND
Daily vibrotactile stimulation reduced hand spasticity in stroke survivors, with effects matching or exceeding botulinum toxin injections.
Relief persisted one month after stopping the glove. Active finger extension improved significantly during use, unlike with injections.
Key findings
01Modified Ashworth scores improved by an average of 0.9 points after eight weeks of daily glove use, and by 1.1 points one month after stopping.
02For BTX-A users, the maximum change in Modified Ashworth scores during botulinum toxin treatment was -1.2 points at week 6, a magnitude similar to the glove's effect.
03Active finger extension range increased significantly during and after glove use, but did not change significantly during or after botulinum toxin treatment.
STILL TO COME
How it was doneWhat they foundWhat it means for PTsWhat it means for OTs
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What it does not show
This was not a randomized controlled trial; order of treatments was not randomized because the duration of glove effects was unknown. The sample size was small (20 analyzed), limiting statistical power for direct comparisons. No functional outcome measures were collected, so it is unclear if spasticity reduction translated to improved daily task performance. The study focused only on chronic stroke; results may not apply to acute or subacute phases. BTX-A users abstained from injections during the glove phase, which may have influenced their baseline or response compared to continuous users.
Declared interests
Not explicitly stated in the provided text.
The easy way to misread this
Do not interpret the similar magnitude of MAS change as proof that the glove is superior to botulinum toxin. The study was not randomized, had a small sample size, and did not perform direct statistical comparisons between the two treatments due to differing timelines.