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1-kHz high-frequency spinal cord stimulation alleviates chronic refractory pain after spinal cord injury: a case
Chiaki Yamada1, Aiko Maeda2, Katsuyuki Matsushita3
1Department of Anesthesiology and Critical Care Medicine, Kyushu University Hospital, Fukuoka, Japan.
Background:
Patients with spinal cord injury (SCI) frequently complain of intractable pain that is resistant to conservative treatments. Here, we report the successful application of 1-kHz high-frequency spinal cord stimulation (SCS) in a patient with refractory neuropathic pain secondary to SCI.
Case Presentation:
A 69-year-old male diagnosed with SCI (C4 American Spinal Injury Association Impairment Scale A) presented with severe at-level bilateral upper extremity neuropathic pain. Temporary improvement in his symptoms with a nerve block implied peripheral component involvement. The patient received SCS, and though the tip of the leads could not reach the cervical vertebrae, a 1-kHz frequency stimulus relieved the intractable pain.
Conclusions:
SCI-related symptoms may include peripheral components; SCS may have a considerable effect on intractable pain. Even when the SCS electrode lead cannot be positioned in the target area, 1-kHz high-frequency SCS may still produce positive effects.
