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Ruan QZ, Chang J, Pak D, Supra R, Yazdi C, Kollenburg L, Kurt E, Reece D, Fonseca ACG, Abd-Elsayed A, Robinson CL. Literature Review: Mechanism, Indications, and Clinical Efficacy of Peripheral Nerve Stimulators in Lower Extremity Pain. Curr Pain Headache Rep 2024; 28:469-479. [PMID: 38512600 DOI: 10.1007/s11916-024-01240-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/13/2024] [Indexed: 03/23/2024]
Abstract
PURPOSE OF REVIEW Lower extremity pain is deemed by Center for Disease Control and Prevention (CDC) to be a significant source of chronic pain in adults. If not appropriately managed, patients are subjected to risks of prolonged musculoskeletal dysfunction, disruption to quality of life, and elevated healthcare expenditures. Peripheral nerve stimulation (PNS) has shown great potential in recent years demonstrating efficacy in multiple diagnoses ranging from acute post-surgical pain to complex regional pain syndrome (CRPS). This study seeks to delineate efficacy of peripheral neuromodulation in the context of chronic lower extremity pain. RECENT FINDINGS Prevailing clinical studies demonstrate evidence levels ranging from II to V (Oxford Centre of Level of Evidence) in lower limb PNS, attaining positive outcomes in pain scores, opioid use, and quality of life measures. Nerves most frequently targeted are the sciatic and femoral nerves with post-amputation pain and CRPS most commonly investigated for efficacy. PNS is a promising therapeutic modality demonstrated to be effective for a variety of nociceptive and neuropathic pain conditions in the lower extremity. PNS offers chronic pain physicians a powerful tool in the multi-modal management of lower limb chronic pain.
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Affiliation(s)
- Qing Zhao Ruan
- Department of Anesthesiology, Weill Cornell Medicine, 1300 York Ave, New York City, NY, 10021, USA.
| | - Jason Chang
- Department of Anesthesiology, Weill Cornell Medicine, 1300 York Ave, New York City, NY, 10021, USA
| | - Daniel Pak
- Department of Anesthesiology, Weill Cornell Medicine, 1300 York Ave, New York City, NY, 10021, USA
| | - Rajesh Supra
- Georgetown University School of Medicine, Washington, DC, USA
| | - Cyrus Yazdi
- Department of Anesthesiology, Critical Care, and Pain Medicine, Harvard Medical School-Beth Israel Deaconess Medical Center, Boston, MA, USA
| | - Linda Kollenburg
- Department of Neurosurgery, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Erkan Kurt
- Department of Neurosurgery, Radboud University Medical Center, Nijmegen, The Netherlands
| | - David Reece
- Absolute Pain Management, Rockville, MD, USA
| | - Alexandra C G Fonseca
- Harvard Medical School, Brigham and Women's Hospital, Department of Anesthesiology, Perioperative, and Pain Medicine, Boston, MA, USA
| | - Alaa Abd-Elsayed
- Chronic Pain Medicine, Department of Anesthesiology, University of Wisconsin-Madison, Madison, USA
| | - Christopher L Robinson
- Department of Anesthesiology, Critical Care, and Pain Medicine, Harvard Medical School-Beth Israel Deaconess Medical Center, Boston, MA, USA
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Saed A, Neal-Smith G, Fernquest S, Bourget-Murray J, Wood A. Management of complex regional pain syndrome in trauma and orthopaedic surgery-a systematic review. Br Med Bull 2023; 146:27-42. [PMID: 37185896 DOI: 10.1093/bmb/ldac034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 11/13/2022] [Indexed: 05/17/2023]
Abstract
INTRODUCTION Complex regional pain syndrome (CRPS) is a neurological pain disorder that is challenging to diagnose and manage, resulting in increased morbidity and costs. It most commonly occurs following traumatic injury, such as a fracture, crush injury or surgery. Recent research has evaluated the efficacy of treatments which have contradicted previous hypotheses. This systematic review summarizes these findings to improve clinician's decision-making. SOURCES OF DATA A comprehensive search of PubMed, MEDLINE and Embase databases from inception through January 2021 was performed in accordance with Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines. Two reviewers independently screened relevant articles discussing the management of CRPS in adult trauma patients. All prospective and retrospective studies, non-randomized comparison studies and case series were considered for inclusion. Data extraction was performed by populating a predefined data abstraction sheet. AREAS OF AGREEMENT There is strong evidence to suggest the efficacy of prompt physiotherapy, lidocaine, ketamine, bisphosphonates, sympathectomy and brachial plexus blocks in the management of CRPS. AREAS OF CONTROVERSY The latest evidence suggests that vitamin C has no significant role to play in the treatment or prevention of CRPS. GROWING POINTS A multidisciplinary team approach and early diagnosis are imperative for successful treatment of CRPS. The Budapest criteria and the British Orthopaedic Association Standards for Trauma and Orthopaedics (BOAST) guidelines should be used when diagnosing CRPS. There is currently no clear evidence of superiority in any treatment. AREAS TIMELY FOR DEVELOPING RESEARCH There are few high-quality studies that inform the best treatment modalities for CRPS. Though emerging treatments show promise, further research is needed.
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Affiliation(s)
- Abdel Saed
- Investigation Performed at the Trauma & Orthopaedic Department, Oxford Trauma Unit, John Radcliffe Hospital, Oxford, UK
| | - Greg Neal-Smith
- Investigation Performed at the Trauma & Orthopaedic Department, Oxford Trauma Unit, John Radcliffe Hospital, Oxford, UK
| | - Scott Fernquest
- Investigation Performed at the Trauma & Orthopaedic Department, Oxford Trauma Unit, John Radcliffe Hospital, Oxford, UK
| | - Jonathan Bourget-Murray
- Investigation Performed at the Trauma & Orthopaedic Department, Oxford Trauma Unit, John Radcliffe Hospital, Oxford, UK
| | - Alexander Wood
- Investigation Performed at the Trauma & Orthopaedic Department, Oxford Trauma Unit, John Radcliffe Hospital, Oxford, UK
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Stark CW, Isaamullah M, Hassan SS, Dyara O, Abd-Elsayed A. A Review of Chronic Pain and Device Interventions: Benefits and Future Directions. Pain Ther 2023; 12:341-354. [PMID: 36581788 PMCID: PMC10036715 DOI: 10.1007/s40122-022-00470-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Accepted: 12/01/2022] [Indexed: 12/31/2022] Open
Abstract
Chronic pain is a debilitating condition with a growing prevalence both in the USA and globally. The complex nature of this condition necessitates a multimodal approach to pain management that extends beyond the established pharmaceutical interventions currently employed. A variety of devices comprising both invasive and noninvasive approaches are available to patients, serving as adjuvants to existing regimens. The benefits of these interventions are notable for their lack of addiction potential, potential for patient autonomy regarding self-administration, minimal to no drug interaction, and overall relative safety. However, there remains a need for further research and more robust clinical trials to assess the true efficacy of these interventions and elucidate if there is an underlying physiological mechanism to their benefit in treating chronic pain or if their effect is predominantly placebo in nature. Regardless, the field of device-based intervention and treatment remains an evolving field with much promise for the future chronic pain management.
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Affiliation(s)
- Cain W Stark
- Department of Anesthesiology, Medical College of Wisconsin, Wauwatosa, WI, USA
| | - Mir Isaamullah
- Department of Anesthesiology, Medical College of Wisconsin, Wauwatosa, WI, USA
| | | | - Omar Dyara
- Department of Anesthesiology, Medical College of Wisconsin, Wauwatosa, WI, USA
| | - Alaa Abd-Elsayed
- Department of Anesthesiology, University of Wisconsin School of Medicine and Public Health, 750 Highland Ave, Madison, WI, 53726, USA.
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Strand N, D'Souza RS, Hagedorn JM, Pritzlaff S, Sayed D, Azeem N, Abd-Elsayed A, Escobar A, Huntoon MA, Lam CM, Deer TR. Evidence-Based Clinical Guidelines from the American Society of Pain and Neuroscience for the Use of Implantable Peripheral Nerve Stimulation in the Treatment of Chronic Pain. J Pain Res 2022; 15:2483-2504. [PMID: 36039168 PMCID: PMC9419727 DOI: 10.2147/jpr.s362204] [Citation(s) in RCA: 31] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Accepted: 07/29/2022] [Indexed: 12/17/2022] Open
Abstract
The objective of this peripheral nerve stimulation consensus guideline is to add to the current family of consensus practice guidelines and incorporate a systematic review process. The published literature was searched from relevant electronic databases, including PubMed, Scopus, Cochrane Central Register of Controlled Trials, and Web of Science from database inception to March 29, 2021. Inclusion criteria encompassed studies that described peripheral nerve stimulation in patients in terms of clinical outcomes for various pain conditions, physiological mechanism of action, surgical technique, technique of placement, and adverse events. Twenty randomized controlled trials and 33 prospective observational studies were included in the systematic review process. There is Level I evidence supporting the efficacy of PNS for treatment of chronic migraine headaches via occipital nerve stimulation; chronic hemiplegic shoulder pain via stimulation of nerves innervating the trapezius, supraspinatus, and deltoid muscles; failed back surgery syndrome via subcutaneous peripheral field stimulation; and lower extremity neuropathic and lower extremity post-amputation pain. Evidence from current Level I studies combined with newer technologies facilitating less invasive and easier electrode placement make peripheral nerve stimulation an attractive alternative for managing patients with complex pain disorders. Peripheral nerve stimulation should be used judiciously as an adjunct for chronic and acute postoperative pain following adequate patient screening and positive diagnostic nerve block or stimulation trial.
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Affiliation(s)
- Natalie Strand
- Department of Anesthesiology, Division of Pain Medicine, Mayo Clinic, Scottsdale, AZ, USA
| | - Ryan S D'Souza
- Department of Anesthesiology and Perioperative Medicine, Division of Pain Medicine, Mayo Clinic, Rochester, MN, USA
| | | | - Scott Pritzlaff
- Department of Anesthesiology and Pain Medicine, Division of Pain Medicine, University of California-Davis, Sacramento, CA, USA
| | - Dawood Sayed
- The University of Kansas Medical Center, Kansas City, KS, USA
| | - Nomen Azeem
- Florida Spine & Pain Specialists, Bradenton, FL, USA
| | - Alaa Abd-Elsayed
- Department of Anesthesiology, University of Wisconsin, Madison, WI, USA
| | | | - Mark A Huntoon
- Department of Anesthesiology, Virginia Commonwealth University, Henrico, VA, USA
| | | | - Timothy R Deer
- The Spine and Nerve Center of the Virginias, Charleston, WV, USA
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Sciatic nerve stimulation alleviates acute neuropathic pain via modulation of neuroinflammation and descending pain inhibition in a rodent model. J Neuroinflammation 2022; 19:153. [PMID: 35706025 PMCID: PMC9199305 DOI: 10.1186/s12974-022-02513-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Accepted: 06/01/2022] [Indexed: 11/12/2022] Open
Abstract
Background Neuropathic pain (NP) is characterized by abnormal activation of pain conducting pathways and manifests as mechanical allodynia and thermal hypersensitivity. Peripheral nerve stimulation is used for treatment of medically refractory chronic NP and has been shown to reduce neuroinflammation. However, whether sciatic nerve stimulation (SNS) is of therapeutic benefit to NP remains unclear. Moreover, the optimal frequency for SNS is unknown. To address this research gap, we investigated the effect of SNS in an acute NP rodent model. Methods Rats with right L5 nerve root ligation (NRL) or Sham surgery were used. Ipsilateral SNS was performed at 2 Hz, 20 Hz, and 60 Hz frequencies. Behavioral tests were performed to assess pain and thermal hypersensitivity before and after NRL and SNS. Expression of inflammatory proteins in the L5 spinal cord and the immunohistochemical alterations of spinal cord astrocytes and microglia were examined on post-injury day 7 (PID7) following NRL and SNS. The involvement of the descending pain modulatory pathway was also investigated. Results Following NRL, the rats showed a decreased pain threshold and latency on the von Frey and Hargreaves tests. The immunofluorescence results indicated hyperactivation of superficial spinal cord dorsal horn (SCDH) neurons. Both 2-Hz and 20-Hz SNS alleviated pain behavior and hyperactivation of SCDH neurons. On PID7, NRL resulted in elevated expression of spinal cord inflammatory proteins including NF-κB, TNF-α, IL-1β, and IL-6, which was mitigated by 2-Hz and 20-Hz SNS. Furthermore, 2-Hz and 20-Hz SNS suppressed the activation of spinal cord astrocytes and microglia following NRL on PID7. Activity of the descending serotoninergic pain modulation pathway showed an increase early on PID1 following 2-Hz and 20-Hz SNS. Conclusions Our results support that both 2-Hz and 20-Hz SNS can alleviate NP behaviors and hyperactivation of pain conducting pathways. We showed that SNS regulates neuroinflammation and reduces inflammatory protein expression, astrocytic gliosis, and microglia activation. During the early post-injury period, SNS also facilitates the descending pain modulatory pathway. Taken together, these findings support the therapeutic potential of SNS for acute NP. Supplementary Information The online version contains supplementary material available at 10.1186/s12974-022-02513-y.
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Peripheral Nerve Injections. Phys Med Rehabil Clin N Am 2022; 33:489-517. [DOI: 10.1016/j.pmr.2022.02.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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