Spinal Cord Stimulation for Neuropathic Pain Relief : Efficacy Study Using the Specific NPSI Questionnaire (NPSI)

Study Overview
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Brief Summary
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Several studies have shown the efficacy of spinal cord stimulation in reducing the intensity of neuropathic pain. This efficacy is defined as obtaining relief of at least 50% of the preoperative pain intensity assessed by the visual analog scale or the digital pain scale. No study has evaluated the efficacy of stimulation specifically on the different components of neuropathic pain, only an overall improvement in pain has been described. A specific questionnaire for neuropathic pain has been extensively validated in neuropathic pain: the Neuropathic Pain Symptom Inventory (NPSI). Thanks to the multidimensional structure of this questionnaire, investigators propose to evaluate separately and in a much more specific way the efficacy of spinal cord stimulation in the short and long term on the different components of neuropathic pain and to define responders subgroups.

Official Title
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Spinal Cord Stimulation for Neuropathic Pain Relief : Efficacy Study Using the Specific NPSI Questionnaire

Conditions
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Neuropathic Pain

Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Age ≥ 18 years With neuropathic pain: confirmed (DN4 score> 4/10) going back to one year at least refractory to well-conducted medical treatments Requiring spinal cord stimulation: the indication is validated by the multidisciplinary meeting (RCP Neuromodulation / Pain at Foch Hospital) Having given his non-opposition Exclusion Criteria: Patient with sepsis Having no well-conducted prior medical treatment With uncontrolled psychiatric disorders (active psychosis, suicidal disorders, severe depression) with somatoform disorders addicted to alcohol or drugs or withdrawal syndrome Deprived of liberty or under guardianship.

Ages Eligible for Study
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Minimum Age: 18 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Efficacy of spinal cord stimulation on the various symptoms of neuropathic pain using the Neuropathic Pain Symptom Inventory (NPSI), change is being assessed. | Neuropathic pain score obtained by the NPSI questionnaire | Day 0; Day 7 after surgery; 3 months, 6 months and 12 months after surgery | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Efficacy of spinal cord stimulation on the psychological level (anxiety and depression) | Anxiety and depression score assessed by Hospital Anxiety and Depression (HAD) questionnaire | Day 0 and 12 months after surgery | 
| Efficacy of spinal cord stimulation on quality of life. | Quality of life score assessed by EQ-5D questionnaire | Day 0 and 12 months after surgery | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Spinal Cord Stimulation, Neuropathic pain, NPSI