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Lumbar Radiofrequency Neurotomy 腰椎射频神经切断术 A radiofrequency neurotomy is a type of injection used to treat facet joint pain. 射频神经切断术是一种用于治疗关节突关节疼痛的注射技术。 Facet joints are pairs of small joints between the vertebrae in the back of the spine. The facet joints support the spine while also allowing motion in terms of bending, flexing and twisting. Each facet joint is connected to two small medial branch nerves that carry pain signals from the facet joints to the brain. 关节突关节是位于脊柱背侧两个椎体间的一对小关节。关节突关节在支撑脊柱的同时，允许脊柱屈伸旋转运动。每个关节突关节连有两根细小的内侧支神经，将关节突关节的疼痛信号传到大脑。 A number of spinal conditions can lead to facet joint pain, such as osteoarthritis and spinal stenosis, or from a trauma to the back, such as a car accident. 许多脊柱疾病可导致关节突关节疼痛，比如骨关节炎和椎管狭窄，以及车祸导致的脊柱创伤。 A radiofrequency neurotomy - also called radiofrequency ablation - begins with the patient laying face down on a table. The skin and tissue over the procedure site is numbed with an injection of local anesthetic. 射频神经切断术，又称射频消融。开始，患者俯卧手术台，术区表面的皮肤软组织注射局麻药物麻醉。 Next, the physician uses x-ray guidance, called fluoroscopy, to direct a special radiofrequency needle alongside the medial nerves. 然后，医生用X线荧光透视机引导，将特殊的射频穿刺针直接插到内侧神经周围。 Often, a small amount of electrical current is carefully passed through the needle to assure it is next to the target nerve and a safe distance from other nerves. This current should briefly recreate the usual pain and cause a muscle twitch in the back.The targeted nerves will then be numbed with a local anesthetic to minimize pain. 通常，小心地经穿刺针传入小量的电流，确定位于靶点神经周围并与其它神经有安全距离。这一电流应该会短暂地重现平时的疼痛并引起背部肌肉的痉挛。然后将靶点神经和局麻药物麻醉，以减轻疼痛。 The radiofrequency waves are introduced to heat the tip of the needle and a heat lesion is created on the nerve to disrupt the nerve's ability to send pain signals to the brain. 射频波将热量导入到针尖部位，造成神经组织的热损伤，破坏神经组织将疼痛信号传入大脑的能力。 As with many spinal injection procedures, radiofrequency neurotomy works better for some patients than for others. It is often helpful in reducing a patient's pain enough to participate in a rehabilitation program. 就象其它许多脊柱注射技术，射频神经切断术对一些病人效果很好，但也有一部分效果不佳。通常它有助于减轻患者疼痛，使其足以参加康复方案。 （高晨珉 转） |
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