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KMID : 1040020120030010035
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International Journal of Pain
2012 Volume.3 No. 1 p.35 ~ p.44
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Peripheral Nerve Stimulation for Chronic Pain Syndromes
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Son Byung-Chul
Kim Deok-Ryeong
Yang Seung-Ho
Hong Jae-Taek
Sung Jae-Hoon
Lee Sang-Won
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Abstract
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Background: We conducted a retrospective analysis of long-term results of peripheral nerve stimulation (PNS) for the treatment of chronic pain syndromes.
Methods: Fifteen patients had electrodes implanted in the peripheral nerves according to the stimulation-induced paresthesia coverage of painful area. PNS was conducted for head and neck pain (n = 6), trunk pain (n = 3), arm leg pain (n = 6). Patients with a greater than 50% reduction in preoperative pain were implanted with an implantable pulse generator (IPG).
Results: Overall, 8 out of 15 patients operated (53.3%) had a successful stimulation trial and received an IPG. Seven patients (46.7%) did not benefit from trial of stimulation and had the electrodes removed. Of the 8 patients that received an IPG, one patient discontinued stimulation during the second year of treatment, therefore, 7 patients received chronic PNS. With 2 years of follow-up, analgesic effect of PNS sustained and consistent. Regarding efficacy of PNS good and fair outcome was achieved in 6 out of 7 patients (85.7%).
Conclusions: It seems that overall effect of PNS was greater for head and neck pain (occipital neuralgia) and upper extremity pain (posttraumatic neuralgia) than pain of lower extremity.
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KEYWORD
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chronic pain, neuropathic pain, peripheral nerve, peripheral nerve stimulation, occipital nerve
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