Neuromodulation : journal of the International Neuromodulation Society
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Objectives. To investigate the different approaches in the field of functional electrical stimulation (FES) control of gait and address fundamental perquisites to enable FES walking systems to become safer, more practical, and therefore clinically efficacious. Design. Systematic review was conducted from electronic data bases up to March 2008. Studies with innovative control strategies were highlighted for analysis, but all relevant literatures were described to deliver a broad viewpoint. ⋯ Finite state controllers based on a set of deterministic rules to process feedback signals seemed more suitable to provide accurate command-and-control compared with dynamic or neural network controllers. Conclusions. Progress in the development of closed-loop FES walking systems has been impeded by their lack of practicality. In the near future, this obstacle could be overcome via implanted systems, especially if using controllers based on deterministic rule sets derived from motion sensor feedback.
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Objectives. The hypothesis of the study is that adding percutaneous tibial nerve neuromodulation (Urgent PC, Uroplasty Inc., Minneapolis, MN, USA) with pelvic floor muscle rehabilitation (Evadri System, Hollister Inc., Libertyville, IL, USA) is safe, and more successful than either therapy alone for the treatment of urge incontinence. Material and Methods. Two hundred and fifty-six female patients with urge incontinence or mixed incontinence were included in this investigation. Patients were treated sequentially (on the same day) with both pelvic floor muscle rehabilitation and percutaneous tibial nerve neuromodulation twice per week at the Southern Arizona Urogynecology Center, Tucson, Arizona. ⋯ The median follow-up is now 19 months. There were no adverse side events. Conclusions. Neuromodulation of the pudendal, hypogastric, and tibial nerves is a highly effective treatment for urge incontinence, and superior to either treatment alone by a factor of greater than two times (see Table 1). [Table: see text].
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Introduction. Interventional pain management techniques require precise positioning of needles or electrodes, therefore fluoroscopic control is mandatory. This imaging technique does however not visualize soft tissues such as blood vessels. Moreover, patient and physician are exposed to a considerable dose of radiation. ⋯ Discussion. The experience with EM navigation acquired with the radiofrequency technique can be transferred to other interventional pain management techniques, for instance, for the placement of a neuromodulation electrode close to the Gasserian ganglion. Currently, research is ongoing to extend the software of the navigation station for spinal application, and to adapt neurostimulation hardware to the EM navigation technology. This technology will allow neuromodulation techniques to be performed without x-ray exposure for the patient and the physician, and this with the precision of CT/MR imaging guidance.
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Objectives. This technical report provides a detailed description of a method of transforaminal nerve root stimulation useful in the treatment of chronic pain conditions. Material and Methods. We describe a patient who presented with a medically refractory peripheral neuropathy and suffered from bilateral foot pain. We utilized transforaminal nerve root stimulation to provide robust stimulation paresthesias to the painful areas. ⋯ Results. The patient experienced appropriate pain relief after the stimulation and did not have any complications related to the procedure. Conclusions. We describe a method of transforaminal nerve root stimulation that can be easily implemented by providers using the standard tools available to them. Transforaminal nerve root stimulation may be appropriate for patients in whom more traditional approaches such as spinal cord stimulation or peripheral nerve stimulation are suboptimal.
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Objective. Percutaneous techniques for occipital nerve stimulation have been in the literature since 1999. Lead migration continues to be the most common complication to the technique. The authors would like to introduce a new technique for revision of a superficially migrated occipital nerve stimulator electrode. ⋯ He had no signs of infection and full return of prior function of the stimulator at two weeks and three-month follow-up visits. Conclusion. This case demonstrates a new safer technique for revision of a superficially migrated occipital nerve stimulator lead. The technique is a more direct and simple solution to a common problem in the percutaneous placement of occipital nerve stimulators.