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INTRODUCTION: The International Neuromodulation Society (INS) has recognized a need to establish best practices for optimizing implantable devices and salvage when ideal outcomes are not realized. This group has established the Neurostimulation Appropriateness Consensus Committee (NACC)® to offer guidance on matters needed for both our members and the broader community of those affected by neuromodulation devices. MATERIALS AND METHODS: The executive committee of the INS nominated faculty for this NACC® publication on the basis of expertise, publications, and career work on the issue. In addition, the faculty was chosen in consideration of diversity and inclusion of different career paths and demographic categories. Once chosen, the faculty was asked to grade current evidence and along with expert opinion create consensus recommendations to address the lapses in information on this topic. RESULTS: The NACC® group established informative and authoritative recommendations on the salvage and optimization of care for those with indwelling devices. The recommendations are based on evidence and expert opinion and will be expected to evolve as new data are generated for each topic. CONCLUSIONS: NACC® guidance should be considered for any patient with less-than-optimal outcomes with a stimulation device implanted for treating chronic pain. Consideration should be given to these consensus points to salvage a potentially failed device before explant.
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Terapia Recuperativa , Estimulación de la Médula Espinal , Humanos , Estimulación de la Médula Espinal/métodos , Estimulación de la Médula Espinal/normas , Terapia Recuperativa/métodos , Terapia Recuperativa/normas , Consenso , Resultado del Tratamiento , Dolor Crónico/terapiaRESUMEN
This case report presents the successful use of dorsal root ganglion stimulation (DRGS) in a 30-year-old female patient with Crohn's disease. Despite extensive treatments, the patient experienced chronic abdominal pain, diarrhea, bloating, cramping, fatigue, and other debilitating symptoms. After a successful DRGS trial with leads placed on the right T6 and T10, she was implanted with a permanent system. At 18 months she continues to experience significant improvement in symptoms, including reduced abdominal pain, decreased defecation frequency, better stool consistency, less pain with eating and bowel evacuation, and enhanced quality of life.
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Ganglios Espinales , Humanos , Femenino , Adulto , Enfermedad de Crohn/complicaciones , Enfermedad de Crohn/terapia , Resultado del Tratamiento , Calidad de Vida , Dolor Abdominal/etiología , Dolor Abdominal/terapia , Estimulación de la Médula Espinal/métodos , Enfermedades Inflamatorias del Intestino/terapia , Enfermedades Inflamatorias del Intestino/complicaciones , Terapia por Estimulación Eléctrica/métodosRESUMEN
BACKGROUND: Thalamic pain syndrome (TPS) is an enigmatic and rare condition. Thalamic pain syndrome is under the umbrella of central pain syndrome, which is classically associated with multiple sclerosis, spinal cord injury, postamputation, epilepsy, stroke, tumor, and Parkinson's disease. The mainstay treatment of TPS is polypharmacy. There is uncertainty about the intermediate options to manage medication-resistant TPS before resorting to invasive, and often expensive, intracranial therapies. Stellate ganglion block (SGB) has shown promise in reducing TPS symptoms of the upper extremity and face following a thalamic ischemic event. AIMS: Discuss the effect and potential utility of SGB on ipsilateral headache, facial, and upper extremity neuropathic pain due to thalamic malignancies. MATERIALS AND METHODS: A review of two patient records that underwent SGB for treatment of TPS of oncologic origin. RESULTS: We present two cases of the successful use of SGB for the treatment of oncologic-related TPS for patients who had failed other conservative pharmacologic measures. DISCUSSION: Chronic pain is a complex experience that often simultaneously involves psychosocial, neuropathic, and nociceptive constituents. Among advanced cancer patients, factors such as an individual's spirituality, psychological stressors, and views on their mortality add layers of intricacy in addressing their pain. While TPS has been characterized in both stroke populations and oncologic populations, the treatment of SGB for pain relief in TPS has been limited to the stroke population. Repeated SGB worked to alleviate the ipsilateral headache, facial, and upper extremity pain in these two patients. The benefits of utilization of SGB, with the possibility of pain relief, within the thalamic malignancy population cannot be understated. CONCLUSION: In summary, ultrasound-guided SGB may be considered in patients with TPS due to thalamic cancer, before pursuing more invasive intracranial surgeries to treat pain.
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Bloqueo Nervioso Autónomo , Dolor Crónico , Neoplasias , Accidente Cerebrovascular , Humanos , Ganglio Estrellado , CefaleaRESUMEN
INTRODUCTION: Spinal cord stimulation (SCS) can provide long-term pain relief for various chronic pain conditions, but some patients have no relief with trial stimulation or lose efficacy over time. To "salvage" relief in patients who do not respond or have lost efficacy, alternative stimulation paradigms or anatomical targets can be considered. Dorsal root ganglion stimulation (DRG-S) has a different mechanism of action and anatomical target than SCS. OBJECTIVES: We assessed DRG-S salvage therapy outcomes in patients who did not respond to SCS or had lost SCS efficacy. MATERIALS AND METHODS: We retrospectively included consecutive patients from 2016 to 2020 who were salvaged with DRG-S after failed SCS trials (<50% pain reduction) or who had lost efficacy after permanent SCS. We compared numerical rating scale (NRS) pain, Oswestry disability index (ODI), health-related quality of life (EuroQol five-dimensions five-level), and oral morphine equivalent (OME) opioid requirements before DRG-S salvage and at patients' last follow-up. RESULTS: A total of 60 patients who had failed SCS were salvaged with DRG-S. The mean age was 56 ± 12 years, and the most common diagnoses were complex regional pain syndrome (n = 24) and failed back surgery syndrome (n = 24). The most common failed modalities included tonic (n = 32), Burst (n = 18), and high-frequency (n = 10) SCS. The median follow-up duration of salvage DRG-S was 34 months. With DRG-S, NRS decreased (8.7 ± 1.2 to 3.8 ± 2.1), and OME declined (median 23 mg to median 15 mg), whereas EuroQol 5D scores increased (0.40 ± 0.15 to 0.71 ± 0.15), and ODI improved (64 ± 14% to 31 ± 18%) (all p < 0.05). CONCLUSIONS: DRG-S can be used in patients with chronic pain who have previously failed to receive persistent benefit from SCS.
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Dolor Crónico , Estimulación de la Médula Espinal , Adulto , Anciano , Analgésicos Opioides , Dolor Crónico/terapia , Ganglios Espinales/fisiología , Humanos , Persona de Mediana Edad , Derivados de la Morfina , Calidad de Vida , Estudios Retrospectivos , Terapia Recuperativa , Médula Espinal , Estimulación de la Médula Espinal/métodos , Resultado del TratamientoRESUMEN
INTRODUCTION: Dorsal root ganglion stimulation (DRG-S) is a relatively new neuromodulation modality. Therefore, data on long-term device explantation rates is limited. This investigation aimed to assess DRG-S device explantation rates at long-term follow-up. METHODS: We retrospectively reviewed individuals implanted with DRG-S in four pain centers from different continuous periods between April 2016 to September 2020. We recorded patient demographics, diagnoses, duration to explantation or last follow-up, treatment complications, and failure etiologies. RESULTS: A total of 249 patients with 756 leads and a mean 27-month follow-up were included. The mean age was 55 ± 15 years; 148 (63%) were female. Leading diagnoses were CRPS (n = 106, 43%), followed by FBSS (n = 64, 26%), and non-surgical low back pain (n = 23, 9%). The explantation rate was ~2% per year (n = 10 total). At explantation, the average time from implantation was 13 ± 10 months. Six patients were explanted for inadequate pain relief. Two patients were explanted due to device-related complications. One patient was explanted secondary to infection and subsequently reimplanted. Five explanted patients experienced a therapy-related complication before eventual explantation: one transient post-procedural neuritis and pocket site pain, one lead fracture, two lead migrations, and one experienced a fracture, a migration, and pocket site pain. DISCUSSION: This large retrospective study of DRG-S revealed a low therapy-termination rate. The rate of infection leading to explantation was objectively very low at 0.4%. The leading cause of explantation was inadequate pain relief. Explanted patients often had a therapy-related complication. Therefore, minimizing adverse treatment events may reduce ultimate explantation rates.
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Dolor de la Región Lumbar , Estimulación de la Médula Espinal , Adulto , Anciano , Análisis de Datos , Remoción de Dispositivos , Femenino , Ganglios Espinales/fisiología , Humanos , Dolor de la Región Lumbar/etiología , Masculino , Persona de Mediana Edad , Estudios Retrospectivos , Estimulación de la Médula Espinal/efectos adversosRESUMEN
INTRODUCTION: Dorsal root ganglion stimulation (DRG-S) is a form of neuromodulation used to treat chronic pain. A spinal cord stimulation (SCS) method with paresthesia-free waveform used in the dorsal columns, burst-SCS, recently demonstrated efficacy using intermittent stimulation, where stimulation is cycled on and off for set durations. Tonic SCS is a paresthesia-based therapy that is ineffective at sub-perception levels and when delivered in a cycled manner. DRG-S also uses a tonic waveform, yet unlike tonic SCS, it is effective at sub-perception levels. This study aimed to determine whether the cycling of stimulation at the DRG could maintain DRG-S efficacy. MATERIALS AND METHODS: This study followed a prospective, randomized, and balanced, double-blinded (assessor) protocol. Twenty DRG-S responders were randomized to a sequence of three programs for consecutive two-week intervals: continuous stimulation; 1 minute on:1 minute off; or 1 minute on:2 minutes off. The primary outcome of this study was change in pain ratings with the cycled programs compared with continuous stimulation. Secondary outcomes included changes in function and scores for quality of life, and stimulation program preference. RESULTS: Mean scores were similar at the end of each two-week stimulation program for Numerical Rating Scale pain (continuous = 2.9 ± 0.8, 1:1 on-off = 2.6 ± 0.7, and 1:2 on-off = 2.7 ± 0.7 cm, p = 0.39), disability (p = 0.72), and general health (p = 0.95). No clinically significant differences were found from the upper boundaries of the 95% confidence intervals of the mean difference in pain, disability, and general health for each intermittent stimulation program vs the continuous program. At the end of the study, the continuous stimulation, 1:1 on-off dosing, and 1:2 on-off dosing programs were preferred by a similar number of patients. CONCLUSIONS: Intermittent DRG-S produces comparable results to continuous stimulation over a two-week period. Intermittent delivery may extend battery life and facilitate a smaller implantable pulse generator.
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Dolor Crónico , Estimulación de la Médula Espinal , Dolor Crónico/diagnóstico , Dolor Crónico/terapia , Estudios de Factibilidad , Ganglios Espinales/fisiología , Humanos , Parestesia/terapia , Estudios Prospectivos , Calidad de Vida , Estimulación de la Médula Espinal/métodos , Resultado del TratamientoRESUMEN
INTRODUCTION: Dorsal root ganglion stimulation (DRG-S), has demonstrated superiority in the treatment of complex regional pain syndrome and causalgia. Lead migration and fracture impact DRG-S therapeutic stability. Lead anchoring reduces DRG-S lead migration without increasing lead fracture. Lead fracture may be related to lead entrapment in the superficial fascial plane. A novel medialized approach for lead placement and anchoring is presented to address these issues. METHODS: We suggest an alternative technique for implanting percutaneous DRG-S leads at the T10-L5 levels. RESULTS: A novel medialized ipsilateral technique for lead placement and anchoring for single, bilateral, and adjacent segment placement is presented. The Tuohy needle puncture site is medial to the pedicle and adjacent to the spinous process, two vertebral levels caudad to the target foramen. Trajectory is maintained in the sagittal plane, to access the caudad interlaminar space near the midline. This technique allows for ipsilateral or contralateral lead placement. After epidural access, the introducer sheath is rotated toward the targeted foramen and advanced. The guidewire followed by the lead is passed, and once lead position is confirmed, tension "S" loops are created, followed by anchoring to the deep fascia. CONCLUSION: We describe a new paramedian technique for DRG-S lead placement. We propose it will decrease DRG-S complication rates through anchoring to reduce migration and by avoiding the fascial planes thought to be responsible for fracture. Long-term outcomes applying our proposed techniques are required for determining the true impact, however, early anecdotal results suggest that these new techniques are favorable.
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Síndromes de Dolor Regional Complejo , Estimulación de la Médula Espinal , Espacio Epidural , Ganglios Espinales , Humanos , Procedimientos NeuroquirúrgicosRESUMEN
INTRODUCTION: Dorsal root ganglion stimulation (DRG-S) is a neuromodulation technique introduced in the last decade with evolving implant methods. Initial prospective research found low incidences of lead migration and lead fracture with DRG-S. However, several recent studies have highlighted high lead migration and lead fracture rates with DRG-S. We investigated the influence of lead anchoring on migrations and fractures. METHODS: We performed a retrospective review between 2016 and 2020 of individuals implanted with DRG-S leads by 4 experienced implanters. The implanters independently changed their standard practice regarding lead anchoring over time, with opposing trends (no anchoring > anchoring, anchoring > no anchoring). We compared lead migration and lead fracture rates between anchored and unanchored DRG-S leads in the entire study cohort. Cox regression was performed on lead migration and fracture distributions. RESULTS: We included 756 leads (n = 565 anchored and n = 191 unanchored) from 249 patients. In unanchored leads, migration occurred in 16 leads (8.4%) from 13 patients (21.0%). In anchored leads, migration occurred in 8 leads (1.4%) from 5 patients (2.7%). Fracture in unanchored leads occurred in 6 leads (3.1%) from 6 patients (9.7%). Fractures in anchored leads occurred in 11 leads (1.9%) from 9 patients (4.8%). The migration survival distributions for the anchored and unanchored leads were statistically significantly different (p < 0.01) with decreased survival for unanchored leads (hazard ratio = 5.8, 95% confidence interval [CI] = 2.2-15.5). DISCUSSION: We found that anchoring DRG-S leads significantly reduces lead migration when compared to leads placed without an anchor. There was no significant difference in fracture rate between anchored and unanchored leads.
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Ganglios Espinales , Estimulación de la Médula Espinal , Análisis de Datos , Humanos , Estudios Prospectivos , Estudios RetrospectivosRESUMEN
OBJECTIVE: Breast cancer is the most common female malignancy worldwide. Breast surgery and adjuvant oncological therapies are often required to increase survival. Treatment-related pain may persist and evolve into postmastectomy pain syndrome (PMPS) in a significant subset of breast cancer survivors. In this retrospective investigation, we will present our experience in applying an interventional algorithmic approach to treat PMPS. DESIGN: A retrospective study. SETTING: An academic cancer hospital. SUBJECTS: Adult females with PMPS diagnosis. METHODS: We reviewed 169 records with the diagnosis of PMPS from 2015 to 2019 within our health system. Pre- and post-injection pain scores, relief duration, and medication usage changes were collected. The decision to perform each procedure was based on the anatomic location of the painful area with the corresponding peripheral sensory innervation. Decision-making flow diagrams were created to present our experience in managing PMPS beyond peripheral nerve blocks. RESULTS: Ultrasound-guided peripheral nerve block results (n=350) were analyzed. The mean baseline pain score was 7, compared with the post-treatment mean score of 3 (95% confidence interval: 3.58 to 3.98, P = 0.0001). Among the responders, the mean pain relief duration was 45 days, with a median of 84 days. Opioid medication consumption was reduced by 11% (t = 0.72, P = 0.47). CONCLUSIONS: Ultrasound-guided nerve blocks of this area could be performed safely and effectively after breast surgeries. We also present our proposed algorithm to provide a stepwise application for selecting the appropriate therapies in the management of more complex PMPS.
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Neoplasias de la Mama , Adulto , Algoritmos , Neoplasias de la Mama/cirugía , Femenino , Humanos , Mastectomía , Dolor Postoperatorio/tratamiento farmacológico , Estudios Retrospectivos , Ultrasonografía IntervencionalRESUMEN
BACKGROUND: Loss of efficacy (LOE) is a well-known phenomenon associated with spinal cord stimulation (SCS) and is the leading cause of explant. Although recent advances in neuromodulation have resulted in a decreased incidence of LOE, it still occurs. Intuition suggests that when LOE ensues, switching to a different SCS therapy/platform could potentially be a viable clinical option; however, there are no data presently available to validate this theory. OBJECTIVES: The primary objective was to evaluate the efficacy of SCS therapy rotation with DeRidder Burst on reversing LOE. A subobjective was to evaluate the hypothesis that the body will treat a novel waveform as a "different therapy" when introduced for the first time, regardless of the setting. STUDY DESIGN: Multicenter, retrospective. SETTING: Private practice. METHODS: A total of 307 patients with ongoing SCS therapy had a de novo therapy conversion to DeRidder Burst via surgical revision or software upgrade. Each cohort was split into 2 additional arms/subcohorts: those who were failing their SCS (salvage) versus those who were reporting success with their SCS system but were looking for increased pain relief (upgrade). This study was physician-directed and not commercially funded. RESULTS: There were statistically significant reductions in Numeric Rating Scale, percent pain relief in both surgical revision and software upgrade arms. A statistical reduction in opioid dosing was seen in the overall population and the salvage group. Larger reductions in pain/opioid consumption were observed in the surgically revised group when the revision was performed earlier. Subgroup analysis showed both salvage and upgrade groups restored treatment efficacy irrespective of time or the previous frequency/waveform. LIMITATIONS: The retrospective nature of the study and the inability to eliminate potential confounding variables when evaluating the use of opioids in the study population. CONCLUSIONS: LOE is an unfortunate occurrence with few evidence-based solutions presently available to reverse it. Our findings suggest that implementing D-Burst stimulation may be an effective option for treating LOE, as well as potentially reducing opioid consumption, regardless of the prior SCS system.
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Analgésicos Opioides/administración & dosificación , Dolor Crónico/diagnóstico , Dolor Crónico/terapia , Manejo del Dolor/métodos , Terapia Recuperativa/métodos , Estimulación de la Médula Espinal/métodos , Adulto , Anciano , Estudios de Cohortes , Femenino , Humanos , Masculino , Persona de Mediana Edad , Estudios Retrospectivos , Resultado del TratamientoRESUMEN
OBJECTIVE: To conduct a systematic literature review of peripheral nerve stimulation (PNS) for pain. DESIGN: Grade the evidence for PNS. METHODS: An international interdisciplinary work group conducted a literature search for PNS. Abstracts were reviewed to select studies for grading. Inclusion/exclusion criteria included prospective randomized controlled trials (RCTs) with meaningful clinical outcomes that were not part of a larger or previously reported group. Excluded studies were retrospective, had less than two months of follow-up, or existed only as abstracts. Full studies were graded by two independent reviewers using the modified Interventional Pain Management Techniques-Quality Appraisal of Reliability and Risk of Bias Assessment, the Cochrane Collaborations Risk of Bias assessment, and the US Preventative Services Task Force level-of-evidence criteria. RESULTS: Peripheral nerve stimulation was studied in 14 RCTs for a variety of painful conditions (headache, shoulder, pelvic, back, extremity, and trunk pain). Moderate to strong evidence supported the use of PNS to treat pain. CONCLUSION: Peripheral nerve stimulation has moderate/strong evidence. Additional prospective trials could further refine appropriate populations and pain diagnoses.
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Dolor Crónico , Dolor de la Región Lumbar , Estimulación Eléctrica Transcutánea del Nervio , Humanos , Manejo del Dolor , Nervios PeriféricosRESUMEN
OBJECTIVE: To conduct a systematic literature review of dorsal root ganglion (DRG) stimulation for pain. DESIGN: Grade the evidence for DRG stimulation. METHODS: An international, interdisciplinary work group conducted a literature search for DRG stimulation. Abstracts were reviewed to select studies for grading. General inclusion criteria were prospective trials (randomized controlled trials and observational studies) that were not part of a larger or previously reported group. Excluded studies were retrospective, too small, or existed only as abstracts. Studies were graded using the modified Interventional Pain Management Techniques-Quality Appraisal of Reliability and Risk of Bias Assessment, the Cochrane Collaborations Risk of Bias assessment, and the US Preventative Services Task Force level-of-evidence criteria. RESULTS: DRG stimulation has Level II evidence (moderate) based upon one high-quality pivotal randomized controlled trial and two lower-quality studies. CONCLUSIONS: Moderate-level evidence supports DRG stimulation for treating chronic focal neuropathic pain and complex regional pain syndrome.
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Ganglios Espinales , Neuralgia , Humanos , Neuralgia/terapia , Estudios Prospectivos , Reproducibilidad de los Resultados , Estudios RetrospectivosRESUMEN
OBJECTIVE: To conduct a systematic literature review of spinal cord stimulation (SCS) for pain. DESIGN: Grade the evidence for SCS. METHODS: An international, interdisciplinary work group conducted literature searches, reviewed abstracts, and selected studies for grading. Inclusion/exclusion criteria included randomized controlled trials (RCTs) of patients with intractable pain of greater than one year's duration. Full studies were graded by two independent reviewers. Excluded studies were retrospective, had small numbers of subjects, or existed only as abstracts. Studies were graded using the modified Interventional Pain Management Techniques-Quality Appraisal of Reliability and Risk of Bias Assessment, the Cochrane Collaborations Risk of Bias assessment, and the US Preventative Services Task Force level-of-evidence criteria. RESULTS: SCS has Level 1 evidence (strong) for axial back/lumbar radiculopathy or neuralgia (five high-quality RCTs) and complex regional pain syndrome (one high-quality RCT). CONCLUSIONS: High-level evidence supports SCS for treating chronic pain and complex regional pain syndrome. For patients with failed back surgery syndrome, SCS was more effective than reoperation or medical management. New stimulation waveforms and frequencies may provide a greater likelihood of pain relief compared with conventional SCS for patients with axial back pain, with or without radicular pain.
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Dolor Crónico , Síndrome de Fracaso de la Cirugía Espinal Lumbar , Estimulación de la Médula Espinal , Dolor Crónico/terapia , Síndrome de Fracaso de la Cirugía Espinal Lumbar/terapia , Humanos , Manejo del Dolor , Columna Vertebral , Resultado del TratamientoRESUMEN
Study design: Randomized, double-blinded, placebo-controlled, cross-over study. Objective: To explore whether botulinum toxin A (BoNTA) could be effective for treating at-level spinal cord injury (SCI) pain. Setting: Outpatient SCI clinic, New York, USA. Methods: Participants were randomized to receive subcutaneous injections of either placebo or BoNTA with follow-up (office visit, telephone, or e-mail) at 2, 4, 8, and 12 weeks to assess the magnitude of pain relief post injection. Crossover of participants was then performed. Those who received placebo received BoNTA, and vice versa, with follow-up at 2, 4, 8, and 12 weeks. Results: Eight participants completed at least one of the two crossover study arms. Four completed both arms. The median age of the eight participants was 45 years (range 32-61 years) and 75% were male. All had traumatic, T1-L3 level, complete SCI. Although our data did not meet statistical significance, we noted a higher proportion of participants reporting a marked change in average pain intensity from baseline to 8 and 12 weeks post-BoNTA vs. post-placebo (33% vs. 0%). At 2 and 4 weeks post-BoNTA, almost all participants reported some degree of reduced pain, while the same was not seen post-placebo (83% vs. 0%). Conclusion: The subcutaneous injection of BoNTA may be a feasible approach for the control of at-level SCI pain and is worthy of further study. Sponsorship: The onabotulinumtoxinA (BOTOX) used in this study was provided by Allergan (Irvine, CA).
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Toxinas Botulínicas Tipo A/uso terapéutico , Neuralgia/tratamiento farmacológico , Fármacos Neuromusculares/uso terapéutico , Manejo del Dolor/métodos , Traumatismos de la Médula Espinal/complicaciones , Adulto , Estudios Cruzados , Método Doble Ciego , Femenino , Humanos , Masculino , Persona de Mediana Edad , Neuralgia/etiologíaRESUMEN
INTRODUCTION: Chronic pelvic pain (CPP) is an elusive and complex neuropathic condition that is notoriously recalcitrant to treatment. The term "CPP" encompasses a number of treatment-resistant conditions like pudendal neuralgia, interstitial cystitis, coccygodynia, vulvodynia. CPP has been presented neuromodulators attempting to utilize conventional spinal cord stimulation (SCS), with constant frustration and high explant rates. Contrary to SCS, dorsal root ganglion stimulation (DRGS) delivers targeted target to focal areas, does not rely on paresthesias, and is able to reliably capture body parts like the pelvis making it an ideal modality for the treatment of CPP. We present seven patients with intractable CPP, resistant to conventional treatment methods, all successfully treated with DRGS. METHODS: The case series includes seven patients with severe, CPP who failed to respond to a variety interventional treatments, and in some cases SCS. All seven patients were successfully trialed with DRGS utilizing leads placed over the bilateral L1 and S2 DRG's-to our knowledge, no publications describing either this particular lead configuration, or utilizing DRG stimulation on CPP, exist. RESULTS: Following treatment, all seven patients experienced significant pain relief as well as reduction in opioid consumption and some cases improvement with sexual function and urination. Four of these patients have been implanted and continue to self-report sustained pain relief with high-satisfaction and functional improvement. To date no explants or instances of loss of efficacy have occurred (>1 year since implant). CONCLUSION: Like most neuropathic pain states, CPP is resilient, difficult to manage, and typically unresponsive to the traditional therapeutics and SCS. Our case series demonstrates no only that DRGS is potentially effective, long-term treatment modality for CPP, but that the L1/S2 lead placement is the configuration of choice despite distinct differences in etiologies of pain and location.
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Terapia por Estimulación Eléctrica/instrumentación , Terapia por Estimulación Eléctrica/métodos , Ganglios Espinales , Manejo del Dolor/métodos , Dolor Pélvico/terapia , Adulto , Dolor Crónico/terapia , Electrodos Implantados , Femenino , Humanos , Persona de Mediana Edad , Neuralgia/terapiaRESUMEN
BACKGROUND AND PURPOSE: Spared fibers after spinal cord injury (SCI) tend to consist predominantly of subcortical circuits that are not under volitional (cortical) control. We aim to improve function after SCI by using targeted physical exercises designed to simultaneously stimulate cortical and spared subcortical neural circuits. METHODS: Participants with chronic motor-incomplete SCI enrolled in a single-center, prospective interventional crossover study. Participants underwent 48 sessions each of weight-supported robotic-assisted treadmill training and a novel combination of balance and fine hand exercises, in randomized order, with a 6-week washout period. Change post-intervention was measured for lower extremity motor score, soleus H-reflex facilitation; seated balance function; ambulation; spasticity; and pain. RESULTS: Only 9 of 21 enrolled participants completed both interventions. Thirteen participants completed at least one intervention. Although there were no statistically significant differences, multimodal training tended to increase short-interval H-reflex facilitation, whereas treadmill training tended to improve dynamic seated balance. DISCUSSION: The low number of participants who completed both phases of the crossover intervention limited the power of this study to detect significant effects. Other potential explanations for the lack of significant differences with multimodal training could include insufficient engagement of lower extremity motor cortex using skilled upper extremity exercises; and lack of skill transfer from upright postural stability during multimodal training to seated dynamic balance during testing. To our knowledge, this is the first published study to report seated posturography outcomes after rehabilitation interventions in individuals with SCI. CONCLUSION: In participants with chronic incomplete SCI, a novel mix of multimodal exercises incorporating balance exercises with skilled upper extremity exercises showed no benefit compared to an active control program of body weight-supported treadmill training. To improve participant retention in long-term rehabilitation studies, subsequent trials would benefit from a parallel group rather than crossover study design.
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Terapia por Ejercicio/métodos , Equilibrio Postural , Rehabilitación/métodos , Traumatismos de la Médula Espinal/terapia , Adulto , Anciano , Estudios Cruzados , Electromiografía , Prueba de Esfuerzo , Femenino , Marcha , Reflejo H , Humanos , Masculino , Persona de Mediana Edad , Estudios Prospectivos , Robótica , Estimulación Magnética Transcraneal , Caminata , Adulto JovenRESUMEN
Prehabilitation benefits among patients undergoing various oncological surgeries have been demonstrated. However, the effects of presurgical exercise and fitness on postoperative ipsilateral upper extremity recovery outcomes in patients with breast cancer surgery are less evident. A systematic review was performed to assess the effects of preoperative exercise and fitness on postmastectomy recovery. Systematic literature search was performed in 12 electronic databases. Study eligibility was accessed using the PICOS (Participants, Interventions, Comparison, Outcome and Study Design) criteria. Six eligible studies were found: three cohort-control and three prospective observational studies. One randomized-controlled trial showed that prehabilitation was beneficial in shoulder range of motion (ROM) and upper extremity functional recovery. One cohort-control study demonstrated that preoperative exercises reduced postoperative pain without increasing the risk of developing a seroma. A prospective cohort study showed that preoperatively active individuals had a significantly better chance of feeling recovered physically at 3 weeks after surgery. Baseline ipsilateral grip strength, shoulder flexion, and abduction ROM were reliable predictors of shoulder flexion and abduction ROM and grip strength improvements at 1 month following breast cancer surgery. One study showed that preoperative conditioning alone without postoperative rehabilitation was insufficient to aid recovery. Implementing exercise program and optimizing preoperative fitness, especially shoulder ROM, before breast cancer surgery in conjunction with individualized rehabilitation program may benefit postmastectomy ipsilateral upper extremity recovery.
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Neoplasias de la Mama/cirugía , Terapia por Ejercicio , Mastectomía , Recuperación de la Función/fisiología , Extremidad Superior/fisiopatología , Femenino , Humanos , Cuidados Preoperatorios , Estudios Prospectivos , Rango del Movimiento Articular/fisiología , Articulación del Hombro/fisiologíaRESUMEN
OBJECTIVES: Spinal cord stimulation (SCS) is an accepted, cost-effective treatment option for a variety of chronic pain syndromes, including failed back surgery syndrome (FBSS). The application of SCS in the cervical spine, particularly for pain after cervical spine surgery, has been drawn into question in recent years by payers due to a purported lack of clinical evidence. To challenge this claim, we analyzed data from a prospective registry to support the use of SCS in the cervical spine for pain after spine surgery. MATERIALS AND METHODS: Data from the EMPOWER and PAIN registries were analyzed on patients diagnosed with pain after neck surgery (C-FBSS) for the following outcomes: patient reported percent pain relief (PRPR), pain disability index (PDI), quality of life (QoL), and satisfaction at 3-, 6-, and 12-month post-implantation. Statistical analysis was provided for all measures. RESULTS: Fifteen patients with C-FBSS were successfully implanted with SCS leads in the cervical spine. PRPR was 65.2%, 62.4%, and 71.9% at 3-, 6-, and 12-month post-implantation, respectively. PDI scores were significantly reduced from baseline (51.21-23.70 at 12 months, p = 0.001). At one-year post-implantation, the average overall QoL was reported to be improved/greatly improved and patient satisfaction was rated satisfied/greatly satisfied. CONCLUSIONS: For many, the application of SCS in the neck for pain after surgery is based on the obvious similarities to FBSS or anecdotal experience rather than published data. The data contained herein suggest SCS for C-FBSS is an effective therapy that improves QoL and patient satisfaction, as well as decreasing pain and PDI. The use of successful application of neurostimulation as a therapy has largely been predicated on the principles of patient selection, implantation technique, and stimulation parameters. As such, SCS would appear to be an appropriate and valid treatment for C-FBSS that requires further study and investigation to make additional recommendations.