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The effect of electromagnetic shielding on phantom limb pain: A placebo-controlled double-blind crossover trial

The effect of electromagnetic shielding on phantom limb pain: A placebo-controlled double-blind crossover trial The effect of electromagnetic shielding on phantom limb pain: A placebo-controlled double-blind crossover trial
The effect of electromagnetic shielding on phantom limb pain: A placebo-controlled double-blind crossover trial The effect of electromagnetic shielding on phantom limb pain: A placebo-controlled double-blind crossover trial

Environmental electromagnetic fields influence biological systems. Evidence suggests these have a role in the experience of phantom limb pain in patients with amputations.

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Key take away

This clinical trial spells out the importance of environmental electromagnetic fields which can be considered a useful technique to improve pain and well-being in patients with phantom limb pain. The study was carried out to investigate the effect of electromagnetic field shielding with a specially designed prosthetic liner.

Background

Environmental electromagnetic fields influence biological systems. Evidence suggests these have a role in the experience of phantom limb pain in patients with amputations.

Method

Randomised placebo-controlled double-blind crossover trial. Twenty suitable participants with transtibial amputations, phantom pain at least 1 year with no other treatable cause or pathology were requested to record daily pain, well-being, activity and hours of prosthetic use on pre-printed diary sheets. These were issued for three 2-week periods (baseline, electromagnetic shielding (verum) and visually identical placebo liners - randomly allocated).

Result

Thirty-three per cent of the recruited participants were unable to complete the trial. The resulting N was therefore smaller than was necessary for adequate power. The remaining data showed that maximum pain and well-being were improved from baseline under verum but not placebo. More participants improved on all variables with verum than placebo.

Conclusion

Electromagnetic field shielding produced beneficial effects in those participants who could tolerate the liner. It is suggested that this might be due to protection of vulnerable nerve endings from nociceptive effects of environmental electromagnetic fields.

Source:

Prosthet Orthot Int. 2016 Jun; 40(3):350-6

Article:

The effect of electromagnetic shielding on phantom limb pain: A placebo-controlled double-blind crossover trial

Authors:

Keren Fisher et al.

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