Pulsed radiofrequency for cancer pain of the lower limb

概要

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We report a patient whose lower limb pain caused by metastatic cancer was relieved by pulsed radiofrequency (PRF) to the lumbar nerve roots, without causing apparent sensory or motor dysfunction. A 61-year-old man had pain in the lower limb caused by metastatic cancer to the lumbar vertebrae. The pain was confined mainly to the right L5 and S1 dermatomes, and severely limited ambulation. Since sideeffects of oral oxycodone or morphine such as nausea/vomiting and somnolence made increase of the dose of opioid difficult, the pain was not controlled adequately. He did not give consent to neurolysis of the nerve roots with alcohol, phenol, or electrocautery. PRF was applied to the right L5 and S1 nerve roots, after which the pain gradually improved without causing sensory or motor dysfunction of the lower limb. Small doses of opioid could control the pain after PRF. We conclude that PRF may play an important role in the treatment of cancer pain involving the limbs.
一般社団法人日本ペインクリニック学会の論文