Efficacy of Physical Modalities for Hemiplegic Shoulder Pain After Stroke: A Systematic Review.
Stefania Spina, Salvatore Facciorusso, Milena Carmela D'Ascanio and 5 others
PMID 42226090WHAT IT FOUND
In adults with post-stroke shoulder pain, electrical, shock-wave, or laser modalities sometimes reduced pain, especially when added to physiotherapy.
Function improved less consistently, and the evidence was very uncertain, so do not treat these as proven stand-alone therapies.
Key findings
01Electrotherapy trials showed mixed results: some forms reduced pain, while others did not improve pain or function compared with control.
02Shock-wave therapy reduced pain compared with sham, and laser therapy added to exercise reduced pain and improved function in some trials.
03The certainty of evidence for pain and function was very low, adverse events were reported in only 5 of 12 trials, and intramuscular electrode complications were described.
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
The review could not combine trials into one overall estimate because the modalities, doses, patient groups and outcome measures differed too much. The trials were small, with 12 studies and 567 participants total. All trials were judged at high risk of bias for outcome measurement because assessors were likely aware of group allocation. Allocation concealment and blinding of participants and personnel were major concerns. Seven of 12 trials gave the physical modality together with physiotherapy, so the effect of the modality alone cannot be separated. Harms were reported in only 5 of 12 trials, so safety cannot be assumed from the trials that did not mention them. Only 5 of 12 studies had follow-up assessments, limiting long-term conclusions. English-language trials only, so relevant evidence may have been missed.
Declared interests
The work was funded by the University of Foggia under the Research Project of Ateneo program, 2024. The authors declared no conflict of interest.
The easy way to misread this
Do not conclude that physical modalities are proven treatments for hemiplegic shoulder pain after stroke. The review found some pain reductions, but the evidence was very low certainty, many trials gave the modality together with physiotherapy, and outcome assessors were likely aware of group allocation.