• Pain · Nov 1997

    Randomized Controlled Trial Comparative Study Clinical Trial

    The efficacy of radiofrequency lesioning of the cervical spinal dorsal root ganglion in a double blinded randomized study: no difference between 40 degrees C and 67 degrees C treatments.

    • R Slappendel, B J Crul, G J Braak, J W Geurts, L H Booij, V F Voerman, and T de Boo.
    • Department of Anesthesiology, Sint Maartenskliniek, Nijmegen, The Netherlands.
    • Pain. 1997 Nov 1;73(2):159-63.

    AbstractThe efficacy of radiofrequency lesion treatment of the cervical dorsal root ganglion (RF-DRG) in cervicobrachialgia was investigated in 61 patients by a randomized prospective double blinded study. Before lesion treatment the putative pain provoking spinal root was identified by diagnostic blocks with a local anesthetic agent. One group of patients (n = 32, group I) was treated with a radiofrequency lesion of 67 degrees C and in a control group (n = 29, group II) a temperature of 40 degrees C was applied. Three months after treatment a significant reduction in VAS scores was demonstrated in both groups. The outcome of the treatments was identical (VAS reduction: group I, 1.7; group II, 1.9; P = 0.001). In group I a VAS reduction of 3 or more occurred in 11/31 (34%) and in group II in 11/29 (38%) of patients. A VAS reduction of 2 or more occurred in group I in 15/31 (47%) and in group II in 15/29 (51%) of patients. This study suggests that treatment with 40 degrees C radiofrequency application of the dorsal root ganglion is equally effective as treatment at 67 degrees C. Further appraisal of this treatment is required.

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