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Objectives: Chronic low back pain (CLBP) is one of the most common chronic pain conditions that cause both individual suffering and a burden to society. For these patients, several interventional treatment options such as surgery, blocks, radiofrequency, and spinal cord stimulation are available. Lately, dorsal root ganglion stimulation (DRG-S) also has been mentioned as an option by targeting bilateral T12 dorsal ganglia. In this study, we present the outcome of 11 patients with CLBP treated with bilateral T12 DRG-S.
Materials And Methods: Thirteen patients with CLBP with and without leg pain were treated with bilateral T12 DRG-S. Three of the patients also received a third lumbar lead owing to leg pain. Eleven of the patients had >50% pain relief during the peri- or/and postoperative testing and received a fully implantable neurostimulator. Pain intensity, general health status, quality of life, pain catastrophizing, mental status, sleeping disorder, physical activity, and patient satisfaction were followed using numeric rating scale (NRS), Patient-Reported Outcomes Measurement Information System 29 version 2.1, Pain Catastrophizing Score, Generalized Anxiety Disorder 7-item scale, Patient Health Questionnaire Depression Module, Insomnia Severity Index, and Patient Satisfaction Questionnaire at baseline before implantation and at three months and six months. The results were analyzed on the basis of six domains: pain relief, sleeping disorder, social ability, mental status, physical activity, and satisfaction. To be identified as a responder, the patients should show a significant improvement in the pain relief domain together with at least two other domains. All responders also were given the opportunity to test 4-Hz DRG-S and compare it with traditional 20-Hz stimulation.
Results: All 11 patients were identified as responders at six months. Five of the patients had >80% pain relief, with an average NRS score reduction of 71% for the whole group. Significant improvement could be observed in three domains for one patient, four domains for three patients, five domains for six patients, and six domains for one patient. Seven patients chose to try 4-Hz stimulation. All seven identified 4-Hz stimulation as at least as good as or better than 20-Hz stimulation and chose to continue with 4-Hz stimulation.
Conclusions: Bilateral T12 DRG-S seems to be an effective treatment for chronic low back pain, with significant beneficial effect not only on pain but also on quality of life, pain catastrophizing, mental status, sleeping disorder, and physical activity. 4-Hz DRG-S gave a result comparable with or better than 20-Hz stimulation.
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Source |
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http://dx.doi.org/10.1016/j.neurom.2023.06.008 | DOI Listing |
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