Efficacy of different frequencies of extracorporeal shockwave on plantar flexor spasticity of the ankle in patients with stroke: a single-center, prospective, single-blind, randomized controlled trial.

The study only compared the extreme ends of the common frequency range (4 Hz and 10 Hz), so the effect of intermediate frequencies is unknown. Most patients had mild spasticity (MAS Grade I), so it is unclear if the results apply to those with severe spasticity. The follow-up period was short (3 weeks), and the Modified Ashworth Scale is a subjective measure. The trial changed its secondary outcome measures after starting, dropping a daily living activities score in favor of a lower limb function score.

Funded by the Sanming Project of Medicine in Shenzhen and the Shenzhen Portion of Shenzhen-Hong Kong Science and Technology Innovation Cooperation Zone. No conflicts of interest declared.

Do not assume shockwave therapy improves overall walking function or reduces clonus in this timeframe. The study found significant improvements in muscle tone and range of motion, but no significant differences in ankle clonus or lower limb motor function scores between the groups.