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Radio frequency lesioning is an outpatient procedure using a specialized machine to interrupt nerve conduction on a semi-permanent basis.〔(【引用サイトリンク】title=RADIOFREQUENCY LESIONING )〕 The nerves are usually blocked for 6–9 months.〔 The procedure is typically used to treat pain of joints in the spine. It is also sometimes known as a facet rhizotomy. == Procedure == The procedure is performed in a fluoroscopy room. Fluoroscopy identifies bony landmarks that allows the physician to localize the relevant nerves.〔 Numbing medication is normally injected before the radiofrequency needle is inserted. After confirmation that the needle tip is positioned correctly, an electrode is inserted into the needle. Using electrical stimulation, the correct nerve is identified by the patient in response to a "tingling" or "buzzing" sensation. This sensation does not typically produce any pain. A small electric current from the radiofreqeuncy lesion generator (a computer) is passed through the needle. The nerves are treated with precise controls by a physician while the needle is inserted into the body.〔(【引用サイトリンク】title=Radiofrequency lesioning (RFL) )〕 The tissues surrounding the needle tip are then heated where electric current is passed using the radiofrequency machine for 60 to 120 seconds. This will numb the nerves. The needle is withdrawn and if successful the nerve branches have been denatured to the point where pain-generating signal is interrupted. Lesioning most commonly occurs at the medial branch nerves of the cervical, lumbar and thoracic spine. This is a common procedure to alleviate back pain brought on by degenerative disc disease, facet arthropathy or generalized facet disease. Typically, a procedure such as this is preceded by nerve stimulation to confirm accurate localization of the nerves. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Radio frequency nerve lesioning」の詳細全文を読む スポンサード リンク
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