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Treatment of Chronic Postamputation Pain With High-Frequency Bioelectric Nerve Block Over 12 Years: A Case Report
Amol Soin1, Erin Barker1, Nemath Syed Shah2
1Ohio Pain Clinic, Dayton, OH.
Background:
Targeted application of high-frequency alternating current to induce reversible electrical nerve block (high-frequency nerve block [HFNB]) was recently approved for the treatment of chronic, intractable postamputation pain. Our case describes the use of HFNB for over 12 years.
Case Report:
In 2012, a 55-year-old woman with above-the-knee lower-limb amputation reporting episodic residual limb pain for 19 years enrolled in a pilot study of HFNB for chronic postamputation pain. During the study, the external waveform generator was replaced with a permanent implantable pulse generator, and the patient continues to use the device today. Data collected regularly at follow-up visits demonstrate sustained improvements in pain and functional outcomes and provide a long-term profile of HFNB treatment.
Conclusion:
Our case describes long-term benefit of HFNB for chronic postamputation pain and provides detail regarding this novel therapy that cannot be derived from large studies evaluating effectiveness on a population level.
