Effects of one session radial extracorporeal shockwave therapy on post-stroke plantarflexor spasticity: a single-blind clinical trial

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What does your doctor say? Or is s/he like my doctor who knew nothing and told me nothing? No clue what radial extracorporeal shockwave therapy is.

Effects of one session radial extracorporeal shockwave therapy on post-stroke plantarflexor spasticity: a single-blind clinical trial

Hojjat Radinmehr, Noureddin Nakhostin Ansari, Soofia Naghdi, Gholamreza Olyaei & Azadeh Tabatabaei

Pages 483-490 | Received 25 Aug 2015, Accepted 27 Jan 2016, Published online: 13 Mar 2016

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• http://dx.doi.org/10.3109/09638288.2016.1148785
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Abstract

Purpose To examine the effects of radial extracorporeal shockwave therapy (rESWT) on plantarflexor spasticity after stroke. Method Twelve patients with stroke were randomly included for this prospective, single-blind clinical trial. Patients received one rESWT session (0.340 mJ/mm², 2000 shots) on plantarflexor muscle. The Modified Modified Ashworth Scale (MMAS), H-reflex tests, ankle range of motion (ROM), passive plantarflexor torque (PPFT) and timed up and go test (TUG) were measured at baseline (T₀), immediately after treatment (T₁) and one hour after the end of the treatment (T₂). Results Patients had improved the MMAS scores for both the gastrocnemius and the soleus muscles, active and passive ROM, PPFT and TUG over time after rESWT. For the PPFT, it was greater at high velocity than at low velocity, and there was a significant three-way interaction between time, knee position (extended/flexed) and velocity (low/high). The H-reflex latency had decreased at T₁, but there was no significant effect on H_max/M_max ratio. Conclusions The rESWT improved plantarflexor spasticity, and the effects sustained for one hour, whereas it was not effective in improving spinal excitability.

• Implications for Rehabilitation
• One session radial extracorporeal shock wave therapy (rESWT) is safe and effective in improving post stroke plantarflexor spasticity, ankle active and passive range of motion, passive torque, and walking capability.
• The spasticity scores improved for both the gastrocnemius and the soleus muscles and persisted one hour after rESWT.
• The magnitude of resistive plantarflexor passive torque in the knee extended position and high velocity was larger over time suggesting greater gastrocnemius spasticity than soleus.
• The rESWT had no significant effects on alpha motorneuron excitability.